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Manufacture method of stainless steel screw

A manufacturing method, stainless steel technology, applied in the direction of screws, threaded fasteners, connecting components, etc., can solve the problems of unable to cut normally, wide kerf, etc.

Inactive Publication Date: 2013-06-05
江苏亚洲气体设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when cutting stone (200≤thickness≤500mm), the slit will be wider, and even cannot be cut normally

Method used

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Embodiment Construction

[0010] The invention is a method for manufacturing stainless steel. It is a base material that is low-carbon steel or low-carbon alloy steel, and is pre-forged or cut into a round rod with a shoulder and an unthreaded shank or a drill tail. The threaded austenitic stainless steel round rod with head is joined together by welding, then the welding burr and the shoulder of the carburized steel part are cut to form a non-carburized hardened zone of appropriate width, and finally the thread rolling process and Quenching treatment is used to manufacture a connection between the head and the threaded shank, which has excellent corrosion resistance. The tail has austenitic stainless steel self-tapping and self-drilling screws suitable for self-tapping and self-drilling functions.

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PUM

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Abstract

A manufacture method of a stainless steel screw includes the following steps: (1) forging, (2) carburization, (3) welding, and (4) quenching. According to the method, a low-carbon steel bar or a low-carbon alloy steel bar is used for treatment, and the low-carbon steel bar or the low-carbon alloy steel bar has the advantages of self tempering and high mechanical performance, replaces a medium-carbon alloy steel bar, has the same high mechanical performance and reaches the standard after the treatment and is bluing. Tempering is eliminated, equipment, electricity and plants are saved, an existing production line is improved, and cost is saved. The low-carbon steel bar or the low-carbon alloy steel bar is directly used along with a hot-rolled steel bar and treated through waste heat of the steel bar, steel is saved for construction engineering, and economic benefits are remarkable.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a method for manufacturing stainless steel self-tapping and self-drilling screws. Background technique [0002] Plasma arc cutting is a cutting method that uses high-temperature, high-speed plasma and its flame to melt, evaporate and gasify the workpiece material and blow it away from the substrate. When cutting metal with small thickness, the cutting speed is fast, the cutting surface is smoother, and the thermal deformation is small, but the incision width is large. When cutting stone with a thickness of 150mm, the incision width is as high as 10-20mm. Therefore, when cutting stone (200≤thickness≤500mm), the cutting seam will be wider, and even cannot be cut normally. Contents of the invention [0003] In view of the above deficiencies, the object of the present invention is to provide a method for manufacturing stainless steel screws, which utilizes low-carbon or low-carbon a...

Claims

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Application Information

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IPC IPC(8): F16B25/00
Inventor 韦须林
Owner 江苏亚洲气体设备有限公司
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