Custom bolts: Tightening tools to meet multiple needs

Custom bolts play a vital role in the field of machinery manufacturing. Mechanical equipment usually needs to withstand greater pressure and load, and needs to maintain a stable connection during operation. Customized high-strength bolts provide a stronger locking force to ensure the normal operation of mechanical equipment. For example, fasteners for automotive engines, connectors for aircraft engines, etc., require the use of customized high-strength bolts to ensure their normal operation.

In the aerospace sector, the demand for custom bolts is even more stringent. Due to the high requirements for safety and reliability in the aerospace sector, the quality and performance of bolts must meet extremely high standards. In the aerospace field, custom bolts are widely used in various parts such as fuselage, wings, and tail fins. For example, the InCONel 718 hexagon bolt, with its excellent high temperature strength, is able to maintain good strength and stability at temperatures up to 650°C, and is excellent in the aerospace field in the connection of high temperature components, such as the fastening of engine components.

In the field of construction, custom bolts are mainly used to connect and fix various building components, such as beams, columns, plates, etc. In the building structure, the bolted connection is a very key link. Customized bolts provide a strong connection, ensuring the stability and safety of the building structure. Whether it is a high-rise building, a long-span bridge, or the installation of important equipment, custom bolts and nuts are indispensable.

In short, custom bolts in machinery manufacturing, aerospace, construction and other fields have a wide range of applications, its important role can not be ignored.

In modern industrial production, different industries and products have different requirements for bolts. For example, in the aerospace field, the material requirements for bolts are extremely high, and special high-strength, high-temperature and corrosion-resistant materials may be required. At the same time, some precision instruments and equipment may require special shapes or sizes of bolts to meet their special installation needs. Custom bolts can be selected according to these special requirements, the right material, processing and surface treatment. According to statistics, about 70% of high-end manufacturing enterprises choose custom bolts in the production process to meet their special product requirements.

Custom bolts can be selected according to customer requirements more suitable materials and processing processes, thus greatly improving the performance and reliability of the product. For example, for some mechanical structures that bear high loads, customized high-strength bolts can ensure the stability and safety of the structure. Through the precise processing technology, the dimensional accuracy and thread quality of the bolts can be guaranteed, and the connection strength and sealing of the bolts can be improved. Data show that the failure rate of equipment using custom bolts is reduced by about 30% compared with equipment using standard bolts.

Customized design can reduce waste, improve production efficiency and reduce production costs. On the one hand, custom bolts can be designed and produced according to the actual needs of the product, avoiding problems such as inappropriate size and excess performance that may occur when using standard bolts, thereby reducing the waste of materials. On the other hand, custom bolts can be better adapted to the production process and improve assembly efficiency. For example, some automated production lines have specific requirements for the size and shape of bolts, and customized bolts can meet these requirements and improve production efficiency. It is estimated that the use of custom bolts can reduce the production cost of enterprises by about 20%.

By choosing the right surface treatment, custom bolts can increase the added value of the product. For example, the use of surface treatment methods such as electroplating and hot-dip galvanizing can improve the corrosion resistance and beauty of bolts. In some high-end products, the surface treatment of customized bolts can match the overall design of the product, improving the quality and grade of the product. In addition, custom bolts can also be personalized according to customer requirements for identification and packaging, increasing the brand value of the product.

The common materials of custom bolts are carbon steel, stainless steel, copper and copper alloy. Among them, carbon steel includes low carbon steel, medium carbon steel and alloy steel. Low carbon steel is usually used for occasions where strength requirements are not high, such as some ordinary mechanical equipment. The strength of medium carbon steel is relatively high, and it can be used for some parts that need to bear a certain load. Alloy steels are used for specific performance requirements, such as higher strength, hardness or corrosion resistance. Stainless steel materials are mainly austenitic stainless steel, such as common 304 and 316 stainless steel. Copper and copper alloy bolts have good electrical conductivity and corrosion resistance, and are often used in some electrical equipment or special environments.

Carbon is an important element in steel, generally speaking, the increase in carbon content will increase the strength and hardness of steel, but it will also reduce the toughness and weldability of steel. For example, the carbon content of medium carbon steel is relatively high, and its strength is higher than that of low carbon steel, but the welding performance is relatively poor. Manganese in steel can improve the wear resistance, hardenability and tensile strength of steel, but also play a role in deoxidation, degassing, and reaction with sulfur to improve malleability. The addition of nickel to stainless steel can form or retain austenitic microstructure at room and low temperatures, increasing ductility and toughness, and reducing the corrosion rate in the active state. Molybdenum element is a strong carbide forming element, the content in alloy steel is usually less than 1%, it can improve the high temperature toughness and creep strength of steel, prevent pitting caused by chloride and sulfide, and improve the ability to resist uniform corrosion and local corrosion.

The main chemical composition of 304 stainless steel bolts is 18% chromium (Cr) and 8% nickel (Ni). It has good corrosion resistance and can resist most common corrosive media, but pitting corrosion may occur when faced with chloride environments (such as seawater). In addition to containing 16%-18% chromium and 10%-14% nickel, 316 stainless steel bolts also contain 2%-3% molybdenum (Mo). Due to the addition of molybdenum, its corrosion resistance is better than 304 stainless steel bolts, especially in the Marine environment and strong corrosive chemical environment. The strength properties of the two are similar, but they may be different under some special processing processes. 316 stainless steel bolts due to the molybdenum element and the processing difficulty is relatively large, the price is usually higher than 304 stainless steel bolts. For example, if used in indoor general environment, such as the assembly of furniture, 304 stainless steel bolts can usually meet the demand and the cost is relatively low. However, if it is used for Marine equipment in long-term contact with sea water, 316 stainless steel bolts can better ensure its service life and reliability, although the cost is higher. In some highly corrosive environments in the chemical industry, in order to ensure the stable operation of equipment and reduce maintenance costs, 316 stainless steel bolts are often preferred rather than 304 stainless steel bolts.

In the production process of custom bolts, there are several factors that can affect the size of standard parts. Mold material and mold making process is an important aspect, different mold material shrinkage rate is different, mold making process temperature, pressure and other parameters will also affect the dimensional accuracy of the mold, and then affect the size of standard parts. The shell material and process are also critical, and the strength and permeability of the shell shape will affect the molding size of the standard parts during the pouring process. Pouring conditions such as pouring temperature and pouring speed also have a significant impact on the size of standard parts. Too high pouring temperature may lead to large size of standard parts, and too fast pouring speed may cause local overheating, affecting the uniformity of size. Therefore, in the production process of customized bolts, we must pay attention to these many factors and strictly control the production process parameters to ensure the stability of the size of the standard parts.

Non-standard bolt custom specifications cover several important aspects. In the choice of materials, the common materials are stainless steel, carbon steel, alloy steel and so on. When selecting materials, it is necessary to consider the factors such as the use environment, bearing capacity and corrosion resistance of the product, and clearly specify the requirements of the grade, chemical composition and mechanical properties of the material. Size requirements involve the diameter, length, pitch, thread type and thread length of the screw, and must be determined by referring to the relevant standards or according to the requirements provided by the customer. Surface treatment has an important impact on the appearance and corrosion resistance of the product, the common surface treatment methods include galvanized, nickel plating, heat treatment and spraying, etc., according to the use of the product environment and requirements to choose the appropriate surface treatment method, and ensure that the thickness and uniformity of the surface treatment layer meet the requirements. In terms of quality control, it is necessary to develop a detailed quality control plan in the production process, including raw material inspection, production process monitoring and final product inspection, etc. Common quality control requirements include appearance inspection, dimensional measurement, mechanical property testing and corrosion resistance testing. Delivery standards include packaging, marking requirements and transportation requirements to ensure the integrity of the product and the accuracy of the marking.

In the manufacture and assembly of machinery and equipment such as automobiles, motorcycles, ships, custom bolts play a vital role. In automotive manufacturing, the engine, chassis and other key parts need high-strength custom bolts to ensure the stability and safety of the equipment. According to statistics, the number of bolts used on an ordinary car can reach thousands, including many custom bolts. For example, the engine connection parts of some high-performance vehicles require custom bolts with special materials and machining processes to withstand high temperature, high pressure and high speed operating environments. In motorcycle manufacturing, custom bolts can meet the requirements of lightweight and high strength, improving the performance and handling of motorcycles. Ship manufacturing requires very high corrosion resistance of bolts, custom bolts can choose corrosion-resistant materials, and special surface treatment to ensure long-term use in the Marine environment.

The construction industry has strict requirements for bolt strength and corrosion resistance. In high-rise buildings, Bridges, large stadiums and other large construction projects, custom bolts are widely used in the connection of steel structures. For example, high-strength custom bolts can withstand great tension and pressure, ensuring the safety and stability of the building. At the same time, some construction projects in special environments, such as seaside buildings, buildings near chemical plants, etc., need customized bolts with corrosion resistance. It is understood that in some large construction projects, the use of custom bolts can reach tens of thousands or even hundreds of thousands.

In the power industry, custom bolts are used to connect various components of power facilities to ensure the normal operation of equipment. For example, the connection of high-voltage equipment such as transformers, circuit breakers, and isolation switches requires high-strength, corrosion-resistant custom bolts. In the transmission line, customized bolts can be connected to wires and towers, wires and insulators, etc., to ensure the safety and stability of the transmission line. The special environment of the power industry requires custom bolts with good insulation properties and corrosion resistance to adapt to harsh working conditions. Data show that in the power industry, the market demand for custom bolts is growing year by year.

Custom bolts are also widely used in aerospace, petrochemical, railway and other industries. In the field of aerospace, customized bolts need to have high strength, high temperature resistance, corrosion resistance and other characteristics to ensure the safety and reliability of spacecraft. For example, aircraft structural parts, engine parts, satellites, etc., need to use custom bolts. In the petrochemical industry, custom bolts are used to connect various high-pressure equipment and pipelines, requiring good corrosion resistance and sealing. In the railway transportation industry, custom bolts are used to connect tracks, vehicles and other components, which need to withstand huge pressure and vibration. In short, custom bolts provide a reliable connection and support for the development of various industries.Get a quote