According to the development situation, the global Fasteners Suppliers has entered a period of micro-growth, and China is no exception. At present, the global demand for fasteners is mainly concentrated in the three major markets of North America, Western Europe and Asia. Its annual demand is more than 10 billion US dollars, which is also the main market for domestic fastener exports.
       After many years of maintaining a double-digit growth trend, the global fastener industry experienced negative growth last year. At the same time, due to the tightening of the traditional European and American markets, this downward trend shows no signs of ending.
       In order to maintain the continuous and stable development of the fastener industry, the domestic fastener industry has put forward a new idea of ​​"adjusting during development and improving during adjustment", adhering to market structure and product structure adjustment as the starting point, and promoting corporate restructuring and industry Agglomeration promotes the transformation of the economic growth pattern of the entire industry. After continuous efforts in the past, my country's fastener industry has maintained steady growth, the pace of industrial adjustment has accelerated, and there have been new breakthroughs in restructuring and industrial concentration.
       Although my country's fastener industry suffered a setback in 2012, the industry is expected to grow steadily in 2013. It is estimated that by 2013 fastener production and sales will reach approximately 7.3 million tons. With the growth of China-ASEAN Free Trade Area, more potential free trade areas may emerge, and the efforts of Chinese enterprises to go out, China's fastener export market is expected to be further diversified, especially in emerging markets and developing National expansion.
       Relevant experts pointed out that under the conditions of contemporary socialist market economy, fastener companies should pay attention to, rely on the state's support policies for the industry, and grasp the direction of the industry. . Fastener enterprises should learn to think and fully understand the industrial policy and guidance of the entire country, and seize the opportunity to carry out technological transformation.
       For domestic Stud Manufacturer, there is no lack of opportunities to get rid of development bottlenecks, but the ability to seize opportunities. The demand for fasteners in the market is developing in the direction of high precision. Domestic manufacturers must greatly improve product performance in order to better grasp the pulse of the market.

Hexagon Socket Head Bolt is a fastener consisting of a head and screws (cylinders with external threads). It needs to cooperate with the nut to be used as a fastener to connect two parts with through holes. This form of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection. So what should we pay attention to before using?

Hexagon Socket Head Bolt introduction:

1. Correct product selection: Before use, please confirm whether the mechanical properties of the product meet the requirements for use, such as the tensile strength of the Hexagon Socket Head Bolt and the load of the nut. The length of the hexagon socket screws should be properly selected. After tightening, the selection should be based on the 1-2 pitch of the nut.

2. Before use, please check whether the thread is rough, and whether there is iron filings or dust between the threads. These things often lead to lockups.

3. Fasteners can be lubricated before use: it is recommended to use butter, molybdenum disulfide, mica, graphite or talc powder for lubrication. At present, it is generally lubricated with wax to prevent locking.

4. Pay attention to the method of use:

(1) The speed and strength of the screw-in are appropriate, not too fast or too large. Use torque wrenches or socket wrenches whenever possible. Prevent the use of adjustable wrenches or electric wrenches. Excessive speed will cause the temperature to rise rapidly and cause locking.

(2) The direction of the applied force, the nut must be tightened perpendicular to the axis of the screw.

5. The use of washers can effectively prevent the problem of over-tightening.

6. Fasteners made of stainless steel, aluminum alloy and titanium alloy often lock or bite. These metal alloys have corrosion resistance. When the surface is damaged, a thin oxide layer is formed on the metal surface to prevent further corrosion. When the stainless steel fasteners are locked, the pressure and heat generated between the teeth will destroy the oxide layer, resulting in blockage or shearing between the metal threads, and then adhesion. When this phenomenon continues to occur, the stainless steel fasteners will be completely locked and can no longer be removed or locked.

The above is China Custom Bolt Wholesaler——Zhejiang Weigao Standard Parts Co., Ltd. introduces the relevant knowledge of Hexagon Socket Head Bolt, hope to give you reference when choosing Hexagon Socket Head Bolt.

 Since the energy of arc burning during Hexagon Socket Head Bolt welding is concentrated between Hexagon Socket Head Bolt and the base metal and their melting zone, a certain pressure must be applied in the melting zone during Hexagon Socket Head Bolt welding. The pressure at this time is quickly and accurately obtained after the arc burns, and there is no pulsation. After a short welding time and peak current, under pressure, the end of the Hexagon Socket Head Bolt is immersed in the molten pool, and the liquid metal part is extruded out of the joint to form a welded joint, which makes the application of stud welding There are many characteristics.

Characteristics of stud welding machine

Very time and cost saving

  All stud welded structures do not require drilling, punching, threading, riveting, screwing and finishing.

2. The expanding application potential of structural design

  When the stud welding machine is used, the welding process is short time, large current and small penetration. Therefore, it can be welded to a very thin plate. For the use of ceramic ring drawn arc stud welding (stud welding machine) and short-cycle drawn arc welding, the plate thickness can be up to 1mm. Capacitor discharge arc stud welding can reach 0.6mm, while capacitor discharge tip ignition stud welding can reach 0.5mm.

  Stud welding workpieces must be welded from one side.

  It can be welded at all positions, and it can be welded to the restricted vertical partition by means of the expander.

  Because it is welded for a short time and rarely deforms after welding, no trimming is required.

  Stud welded joints can achieve high strength.

  After the plating or high alloy plate is welded, there is no mark on the back.

3. Good economy

  The advantage of stud welding over other welding methods lies in the welding power. For mass-produced workpieces, it can reach 8-40 pieces / min in a short welding time (3-980ms) (according to different diameter studs and different welding power). The automatic feeding stud welding machine can reach 60 pieces / min.

  Standard studs are low cost.

  There are many types of stud welding equipment and welding guns, and the equipment purchase cost is relatively low.

  Depending on the product, it can be made into a multi-station automatic welding machine, or a high-precision gantry CNC automatic welding machine.

  Stud welding has higher quality reproducibility and smaller scrap rate.

  However, the application of traditional Chinese medicine in stud welding is to note that stud welding, like other fusion welding, has restrictions on the carbon content of steel-for structural steel studs, the carbon content w (C) should be 0.18% Within; and the carbon content w (C) of the base metal should be within 0.2%.

  According to the different methods of stud welding, the recommended stud material and base metal combination are weldable: otherwise the stud and base metal will be insoluble with each other.

  The combination of stud material and base material beyond the recommended range shall be determined by experiment to determine the weldability and the possibility of relevant inspection and evaluation according to the design requirements of the product.

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