Shenzhen Honscn Precision parts Co,.Ltd.

Since 2019, our company has conducted monthly summaries every month. Over the years, through the continuous summary and reflection, we continue to improve their own strength and service level, in our continuous efforts, the company's growth and achievements are obvious to all.

Shenzhen Honscn Precision Hardware may not sound like a brand name company, but this custom hardware fastener factory in China's southern economic powerhouse of Guangdong province has generated millions of dollars in exports over the past year.

In the workshop, technicians in gray-blue uniforms are working intently, churning out one shiny part after another from the machines they operate.

Shenzhen Honscn Precision Hardware Co., Ltd. is a company with a human touch.

In the office above the workshop, General Manager Li works and eats with the company's employees.

"I'm lucky that the work I do matches my passion. So do our colleagues in the export trade. It's easier to get good grades if you combine your work with your interests."

Businesses, like people, should have a purpose. As long as we set ourselves a goal, we have the determination to overcome difficulties one by one."

Previously, the market for high-end custom hardware fasteners in China was dominated by several major foreign manufacturers. Li and her colleagues changed that with a cost-effective product they developed.

"This is the main motivation for us to take the path of independent innovation," she said.

"We will produce hardware fasteners that best meet the needs of customers in the world, so that excessively expensive imported hardware tools will become a thing of the past."

At the entrepreneurs' symposium held in Shenzhen in 2023, Li, who attended as a representative of private enterprises, stressed the need to do everything possible to protect market players, stimulate vitality and enhance the basic advantages of the country's economic development, and confirmed her conviction to serve the country.

Shenzhen Honsc Precision is a professional manufacturer of screw, standoff,nut and others fasteners. We offer OEM and ODM service with any related products for customers. We have a professional team of product internal structure design and engineers, as well as a professional packaging team, our sales and documentation and logistics departments can finish the requirements of presentation of documents under various payment methods and different transportation modes.

• We will provide samples with regular colors, regular functions, no brand printing and PE bag packaging to confirm the styles and basic parameters for customers



• After receiving the regular samples, customers will arrange the size and magnetic test, After confirming that the size are approval, we will arrange second sampling when the customer needs us to improve the product function magnetic. The following are the details required by the customer and we provide redesign to meet requirment.

Meantime, we will test it before shipping samples. And all tests are strictly carried out according to industry standards.







• After receiving T2 samples (designated special size and magnetic adjustment, etc.), customer arrange tests again. If confirmed the sample okay, the customer needs us to provide the certificates of this product conforming to EU standards, such as RoHS and MSDS before placing order. And the list of CE compliance statements as follows. All of our products are in accordance with all the European certification, such as CE, RoHS, REACH, etc., and all of them have prepared standard documents for customers checking.





• We start to prepare the order materials when customer confirm all the details such as color, size, function and other details of the final sample.

After the package such as qty, card, shipping mark etc. are provided by customer, we starts to arrange the master production. After all the goods finished, send picture to customer for approval. We promise the packaging is same as customer requested, master products are exactly the same as the final samples. The following photos of the master shipment, the passing rate of the third-party inspection of our company is 100%.





• After receiving shipment of whole order, customer put it on the market immediately and became the most popular product in the market quickly, no matter from the traditional market, the market of high-end professional fasteners or the online sales in Amazon. We always pay much attention to the quality of our products, which is recognized by customers and repurchased constantly.

Now many industries of precision parts will use CNC machining production, but after CNC machining is completed, many products surface is still relatively rough, this time you need to carry out secondary surface finishing treatment.

First of all, surface treatment is not suitable for all CNC processing products, some products can be directly used after processing, and some need to be hand-polished, electroplating, oxidation, radium carving, screen printing, powder spraying and other special processes. Here are some things you should know about surface treatment.

1, improve product accuracy; After the product processing is completed, some products have a rough surface and leave a large residual stress, which will reduce the accuracy of the product and affect the precision of the match between the parts. In this case, the product surface treatment is required.

2, provide product wear resistance; If the parts usually use scenarios are interacting with other parts, long-term use will increase part wear, which also requires processing of the product surface to extend the service life of the parts.

3, improve the corrosion resistance of the product; Parts used for a long time in highly corrosive places require special surface treatment, requiring polishing and spraying of anti-corrosion materials. Improve corrosion resistance and service life of the product.

The above three points are the prerequisites for surface processing after CNC precision parts processing, and several surface treatment methods will be introduced below.




What is electroplating? What are the types and applications of electroplating?

01. What is electroplating?

Electroplating refers to the surface engineering technology of obtaining a solid metal film on the surface of the substrate by electrolysis in a salt solution containing the metallized group, with the metallized group as the cathode and the metallized group or other inert conductor as the anode under the action of direct current.

02. Why electroplate?

The purpose of electroplating is to improve the appearance of the material, while giving the surface of the material a variety of physical and chemical properties, such as corrosion resistance, decorative, wear resistance, brazing and electrical, magnetic, optical properties.

03. What are the types and applications of electroplating?

1, galvanized

The galvanized layer is of high purity and is an anodic coating. The zinc layer plays a mechanical and electrochemical protective role on the steel matrix.

Therefore, galvanized layer is widely used in machinery, hardware, electronics, instruments, light industry and other aspects, is one of the most widely used plating species.



2. Copper plating

The copper coating is a cathode polar coating, which can only play a mechanical protection role on the base metal. The copper plating layer is usually not used as a protective decorative coating alone, but as the bottom or middle layer of the coating to improve the adhesion between the surface coating and the base metal.

In the field of electronics, such as through hole copper plating on printed circuit boards, as well as hardware technology, crafts, furniture decoration and other fields.



3. Nickel plating

Nickel plating layer is a negative polarity protective layer, which only has a mechanical protection effect on the base metal. In addition to the direct use of some medical devices and battery shells, the nickel-plated layer is often used as the bottom or middle interval layer, which is widely used in daily hardware, light industry, home appliances, machinery and other industries.



4. Chrome plating

The chromium-plated layer is a negative polarity coating, which only plays a mechanical protection role. Decorative chrome plating, the bottom layer is generally polished or electrodeposited bright coating.

Widely used in instruments, meters, daily hardware, household appliances, aircraft, automobiles, motorcycles, bicycles and other exposed parts. Functional chrome plating includes hard chrome plating, porous chrome, black chrome, opal chrome and so on.

Hard chrome layer is mainly used for various measuring calipers, gauges, cutting tools and various types of shaft, loose hole chrome layer is mainly used for cylinder cavity piston failure; The black chrome layer is used for parts that need a dull surface and wear resistance, such as aviation instruments, optical instruments, photographic equipment, etc. Opalescent chromium is mainly used in various measuring tools.



5. Tin plating

Compared to the steel substrate, tin is a negative polar coating, while compared to the copper substrate, it is an anode coating. The tinning layer is mainly used as the protective layer of thin plate in the can industry, and most of the malleable iron skin is made of iron plate tinning. Another major use of tin coatings is in the electronics and power industries.

6, alloy plating

In a solution, two or more metal ions are co-precipitated on the cathode to form a uniform fine coating process called alloy plating.

Alloy electroplating is superior to single metal electroplating in crystal density, porosity, color, hardness, corrosion resistance, wear resistance, magnetic conductivity, wear resistance and high temperature resistance.

There are more than 240 kinds of electroplating alloys, but less than 40 kinds are actually used in production. It is generally divided into three categories: protective alloy coating, decorative alloy coating and functional alloy coating.

Widely used in aviation, aerospace, navigation, automobile, mining, military, instruments, meters, visual hardware, tableware, Musical Instruments and other industries.

In addition to the above, there are other chemical plating, composite plating, non-metal plating, gold plating, silver plating and so on.


What is polishing?

The surface of the items processed by CNC machining or 3D printing is sometimes rough, and the surface requirements of the products are high, so they need to be polished.

Polishing refers to the use of mechanical, chemical or electrochemical action to reduce the surface roughness of the workpiece in order to obtain a bright, flat surface processing method.

Polishing can not improve the dimensional accuracy or geometric accuracy of the workpiece, but for the purpose of obtaining a smooth surface or mirror gloss, and sometimes to eliminate gloss (extinction).



Several common polishing methods are described below:

01. Mechanical polishing

Mechanical polishing is by cutting, plastic deformation of the surface of the material to remove the polished convex and smooth surface polishing method, the general use of whetstone strip, wool wheel, sandpaper, etc., mainly manual operation, surface quality requirements can be used to super-fine polishing method.

Super finishing polishing is the use of special grinding tools, in the polishing liquid containing abrasive, tightly pressed on the workpiece to be machined surface, for high-speed rotation. This method is often used in optical lens molds.

02. Chemical polishing

Chemical polishing is to dissolve the microscopic protruding part of the surface of the material in the chemical medium preferentially than the concave part, so as to obtain a smooth surface.

The main advantage of this method is that it does not require complex equipment, can polish the workpiece with complex shape, and can polish many workpieces at the same time, with high efficiency.

The core problem of chemical polishing is the preparation of polishing liquid.

03. Electrolytic polishing

The basic principle of electrolytic polishing is the same as that of chemical polishing, that is, the surface is smooth by selectively dissolving small protruding parts on the surface of the material.

Compared with chemical polishing, the effect of cathode reaction can be eliminated and the effect is better.

04. Ultrasonic polishing

The workpiece is put into the abrasive suspension and placed together in the ultrasonic field, and the abrasive is ground and polished on the workpiece surface by relying on the oscillation of the ultrasonic wave.

Ultrasonic processing macroscopic force is small, will not cause workpiece deformation, but tooling production and installation is more difficult.

05. Fluid polishing

Fluid polishing relies on high-speed flowing liquid and the abrasive particles it carries to wash the surface of the workpiece to achieve the purpose of polishing.

Common methods are: abrasive jet processing, liquid jet processing, hydrodynamic grinding and so on. Hydrodynamic grinding is driven by hydraulic pressure to make the liquid medium carrying abrasive particles flow through the surface of the workpiece at high speed.

The medium is mainly made of special compounds with good flow under low pressure and mixed with abrasives, which can be silicon carbide powder.

06. Magnetic grinding polishing

Magnetic grinding and polishing is the use of magnetic abrasive under the action of magnetic field to form an abrasive brush, grinding the workpiece.

This method has the advantages of high processing efficiency, good quality, easy control of processing conditions and good working conditions.

The above are 6 common polishing processe.

HONSCN Precision has been a professional CNC machining manufacturer for 20 years. Cooperation with more than 1,000 enterprises, deep technology accumulation, senior technician team, welcome to consult customized processing!Customer service

General steps of plastic parts designPlastic parts are designed on the basis of industrial modeling. First, see whether there are similar products for reference, and then carry out detailed functional decomposition of products and parts to determine the main process problems such as parts folding, wall thickness, demoulding slope, transition treatment between parts, connection treatment and strength treatment of parts.1. Similar reference


Before design, first look for similar products of the company and peers, what problems and deficiencies have occurred in the original products, and refer to the existing mature structure to avoid problematic structural forms.2. Determine the part discount, transition, connection and clearance treatment between partsUnderstand the modeling style from the modeling drawing and effect drawing, cooperate with the functional decomposition of the product, determine the number of parts (different surface states are either divided into different parts, or there must be over treatment between different surfaces), determine the over treatment between parts' surfaces, and determine the connection mode and fit clearance between parts.
3. Determination of part strength and connection strengthDetermine the wall thickness of the part body according to the product size. The strength of the part itself is determined by the wall thickness of the plastic part, the structural form (the plastic part in the shape of a flat plate has the worst strength), the stiffener and the stiffener. While determining the single strength of parts, the connection strength between parts must be determined. The methods to change the connection strength include: adding screw column, adding stop, adding buckle position and adding reinforcing bone against top and bottom.4. Determination of demoulding slope
The demoulding slope shall be comprehensively determined according to the material (PP, PE silica gel and rubber can be demoulded forcibly), surface state (the slope of decorative grain shall be greater than that of smooth surface, and the slope of etched surface shall be 0.5 degrees greater than that required by the template as far as possible, so as to ensure that the etched surface will not be damaged and improve the yield of products), transparency or not determines the demoulding slope of parts (the transparent slope shall be greater).Material types recommended by different product series of the companySurface treatment of plastic parts
Wall thickness selection of plastic partsFor plastic parts, the uniformity of wall thickness is required, and the workpiece with uneven wall thickness will have shrinkage traces. It is required that the ratio of stiffener to main wall thickness should be less than 0.4, and the maximum ratio should not exceed 0.6.Demoulding slope of plastic parts
In the construction of stereoscopic drawing, where the appearance and assembly are affected, the slope needs to be drawn, and the slope is generally not drawn for stiffeners.The demoulding slope of plastic parts is determined by the material, surface decoration status and whether the parts are transparent or not. The demoulding slope of hard plastic is greater than that of soft plastic. The higher the part, the deeper the hole, and the smaller the slope.Recommended demoulding slope for different materials
Numerical values of different accuracy in different size rangesDimensional accuracy of plastic partsGenerally, the accuracy of plastic parts is not high. In practical use, we mainly check the assembly dimensions, and mainly mark the overall dimensions, assembly dimensions and other dimensions that need to be controlled on the plan.
In practice, we mainly consider the consistency of dimensions. The edges of the upper and lower covers need to be aligned.Economic accuracy of different materialsNumerical values of different accuracy in different size ranges
Surface roughness of plastics1) The roughness of the etched surface cannot be marked. Where the plastic surface finish is particularly high, circle this range and mark the surface state as mirror.2) The surface of plastic parts is generally smooth and bright, and the surface roughness is generally ra2.5 0.2um.
3) The surface roughness of plastic mainly depends on the surface roughness of mold cavity. The surface roughness of mold is required to be one to two levels higher than that of plastic parts. The mold surface can reach ra0.05 by ultrasonic and electrolytic polishing.FilletThe fillet value of injection molding is determined by the adjacent wall thickness, generally 0.5 1.5 times of the wall thickness, but not less than 0.5mm.
The position of the parting surface shall be carefully selected. There is a fillet on the parting surface, and the fillet part shall be on the other side of the die. It is difficult to make, and there are fine trace lines at the fillet. However, fillet is required when anti cutting hand is required.Stiffener problemThe injection molding process is similar to the casting process. The non-uniformity of wall thickness will produce shrinkage defects. Generally, the wall thickness of reinforcement is 0.4 times of the main body thickness, and the maximum is no more than 0.6 times. The spacing between bars is greater than 4T, and the height of bars is less than 3T. In the method of improving the strength of parts, it is generally reinforced without increasing the wall thickness.
The reinforcement of the screw column shall be at least 1.0mm lower than the end face of the column, and the reinforcement shall be at least 1.0mm lower than the part surface or the parting surface.When multiple bars intersect, pay attention to the non-uniformity of wall thickness caused by the intersection.Design of stiffeners for plastic parts
Bearing surfacePlastic is easy to deform. In terms of positioning, it should be classified as the positioning of wool embryo. In terms of positioning area, it should be small. For example, the support of plane should be changed into small convex points and convex rings.Oblique roof and row position
The inclined top and row position move in the parting direction and perpendicular to the parting direction. The inclined top and row position shall be perpendicular to the parting direction, and there shall be sufficient movement space, as shown in the following figure:Treatment of plastic limit process problems1) Special treatment of wall thickness
For particularly large workpieces, such as the shell of toy cars, the wall thickness can be relatively thin by using the method of multi-point glue feeding. The local glue position of the column is thick, which is treated as shown in the following figure.Special treatment of wall thickness2) Treatment of small slope and vertical surface
The die surface has high dimensional accuracy, high surface finish, small demoulding resistance and small demoulding slope. In order to achieve this purpose, the parts with small inclination of the workpiece are inserted separately, and the inserts are processed by wire cutting and grinding, as shown in the figure below.To ensure that the side wall is vertical, the running position or inclined top is required. There is an interface line at the running position. In order to avoid obvious interface, the wiring is generally placed at the junction of fillet and large surface.Treatment of small slope and vertical surface
To ensure that the side wall is vertical, the running position or inclined top is required. There is an interface line at the running position. In order to avoid obvious interface, the wiring is generally placed at the junction of fillet and large surface.Problems often to be solved for plastic parts1) Transition processing problem
The accuracy of plastic parts is generally not high. There must be transition treatment between adjacent parts and different surfaces of the same part.Small grooves are generally used for transition between different surfaces of the same part, and small grooves and high-low staggered surfaces can be used between different parts, as shown in the figure.Surface over treatment
2) Clearance value of plastic partsParts are directly assembled without movement, generally 0.1mm;The seam is generally 0.15mm;
The minimum clearance between parts without contact is 0.3mm, generally 0.5mm.3) The common forms and clearance of plastic parts are shown in the figureCommon forms and clearance taking method of stop of plastic parts

DETROIT-Executives from four auto parts companies said Tuesday that they don't expect widespread fallout from a shortage of a key ingredient in plastic resin following a factory explosion.Officials with Delphi Automotive, Illinois Tool Works, AK Steel and Parker Hannifin said during conference calls to discuss their companies' earnings that a shortage of PA-12 shouldn't disrupt their operations.Automakers and parts companies have been scrambling to find substitutes since a factory in Germany that makes much of the world's supply of the ingredient suspended production after it exploded in March.The resin is used in hundreds of parts. It's most critical in fuel and brake lines because it can carry gasoline and other fluids without deteriorating.Companies that make fuel lines, brake lines and connectors have been worried they will run out of PA-12 and they may have to stop shipments to automakers and larger parts suppliers. One key fuel line maker, TI Automotive, warned last week that the auto production interruptions are likely in the next few weeks. TI and a trade group of suppliers held an industrywide meeting last week to look at the remaining supply of PA-12 and encourage faster testing of alternatives.But Rodney O'Neal, CEO of Delphi, one of the largest parts suppliers, said he sees little impact on Delphi or auto production."I don't see this as a crisis in terms of tremendous downtime at all for anyone around the world," O'Neal said. He said the auto industry is addressing the problem quickly and with flexibility.Delphi, a Troy, Mich., supplier of audio systems, fuel pumps, wiring connectors and other items, uses PA-12 in a small number of parts and has lined up substitutes, O'Neal said."We believe there's enough inventory in the channel right now to handle this," John Brooklier, vice president of investor relations for Illinois Tool Works, told investors on a separate call Tuesday. He said the Glenview, Ill., maker of metal and plastic parts such as door handles uses little PA-12 but is watching the impact on auto companies.At AK Steel, CEO James Wainscott said customers are telling the company that any shortage is likely to be a challenge mostly for European automakers in the U.S.The West Chester, Ohio, company, he said, was concerned about the problem until the last day or so."There may be some trickle-lower effect here, but we don't look for that to be a great concern," Wainscott told investors.Automakers say the issue hasn't interrupted production thus far. The shortage was caused by a March 31 explosion at Evonik Industries' plant. The factory supplied at least a quarter of the world's PA-12, and about 70 percent of a chemical that's used by other companies to make resin. Evonik has said the plant will be out of operation for at least three months.At Parker Hannifin, a maker of valves, filters, pumps and hoses, CEO Donald Washkewicz said his company isn't in the fuel line business but does use PA-12, also known as nylon-12, in air brake tubing and other parts. The Cleveland-based company, he said, has been using alternate materials."We're able to keep our customers out of trouble," Washkewicz said.But Washkewicz said the shortage could drive up the cost of raw materials used to make plastic parts.Few plastics can do what PA-12 does. The chemical doesn't absorb as much moisture as other plastics and will stand up to carrying gasoline, brake fluid and other hydrocarbon liquids. Sadhan Jana, a professor of polymer engineering at the University of Akron in Ohio, said he knows of no other plastic as as durable as PA-12.Any substitute would have to go through rigorous testing to make sure it would work for a specific automotive part, Jana says. Those tests could take months.Automakers and suppliers are close to agreeing on a fast-track process for testing replacements.The Automotive Industry Action Group, a nonprofit trade group, said Monday that General Motors Co., Ford Motor Co., Chrysler Group, Honda Motor Co., Hyundai-Kia, Volkswagen AG and their suppliers, are expected to finalize new testing standards next week. The agreement would reduce the interim approval process for new materials to three weeks from the current eight weeks or longer.AIAG said the group feels confident it can shorten the testing time because alternative resins are already well known and previous testing has accurately predicted real-world performance.