Stainless steel heavy type expansion screw rod and molding process thereof
A technology of detonation screw and forming process, which is applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., which can solve the problems of low product dimensional stability, unstable mechanical properties, and high raw material costs, and reduce the cost of raw materials. The effect of labor processing cost, stable product quality and better mechanical properties
Active Publication Date: 2012-10-24
EAGLE METALWARE
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Problems solved by technology
Due to the particularity of stainless steel material with severe work hardening, strong toughness, and easy bonding of chips, the current production of stainless steel screw products in the industry is basically processed by bar turning. The processing technology is: cutting material-turning tail-turning outer circle -Turning cone surface-rolling teeth-printing-cleaning-packaging, this processing method has relatively many processing steps, low production efficiency, and the dimensional stability of the processed products is not high, the mechanical properties of the products are unstable, and the cost of raw materials High, the waste of processing raw materials is also very serious
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Embodiment Construction
[0024] The present invention will be further described below with specific examples, but the present invention is not limited by the following examples.
[0025] The molding process of a kind of stainless steel heavy-duty pull-explosion screw of the present embodiment comprises the following steps: A, cold heading forming: the blank passes through the first station mold, the second station mold, the third station mold and the fourth station successively Cold heading forming of the bit mold to make the primary product of the blasting screw; B. Turning the end of the blasting screw: turning the tail end of the primary product of the blasting screw into a beam tail; The finished product is extruded by the tooth plate, so that the second half end of the primary product of the blasting screw is threaded; D. Printing: printing on the surface of the primary product of the blasting screw after tooth rolling, so that the surface of the primary product of the blasting screw is marked; E ...
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The invention relates to the technical field of an expansion screw rod, and particularly a stainless steel heavy type expansion screw rod and a molding process of the stainless steel heavy type expansion screw rod. The molding process of the stainless steel heavy type expansion screw rod comprises the following steps of: a, cold heading molding, wherein a blank is subjected to cold heading molding through a first working position mold, a second working position mold, a third working position mold and a fourth working position mold so as to manufacture a expansion screw rod early finished product; B, bundle milling, wherein the tail end of a expansion screw rod early finished product is milled into a bundle tail; C, tooth grinding, wherein the expansion screw rod early finished product subjected to bundle milling is extruded by a tooth plate so as to form a thread on the rear half end part of the expansion screw rod early finished product; D, word printing, wherein words are printed on the surface of the expansion screw rod early finished product subjected to the tooth grinding, so as to form marks on the surface of the expansion screw rod early finished product; and E, washing, wherein the expansion screw rod early finished product printed with the words are washed, thereby eliminating the sweeps and grease on the surface and making the expansion screw rod finished product. With the adoption of the molding process, the production process is simplified, the production period is shortened, the production efficiency is improved, and the production cost is reduced.
Description
technical field [0001] The invention relates to the technical field of detonation screws, in particular to a stainless steel heavy-duty detonation screw and its forming process. Background technique [0002] Due to its special structure, the explosive screw is widely used in the construction and decoration industry and other industrial fields. Due to the particularity of stainless steel material with severe work hardening, strong toughness, and easy bonding of chips, the current production of stainless steel screw products in the industry is basically processed by bar turning. The processing technology is: cutting material-turning tail-turning outer circle -Turning cone surface-rolling teeth-printing-cleaning-packaging, this processing method has relatively many processing steps, low production efficiency, and the dimensional stability of the processed products is not high, the mechanical properties of the products are unstable, and the cost of raw materials High, and the w...
Claims
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Login to View More IPC IPC(8): B23P15/00B21J5/02B21J13/02
Inventor 朱重庆
Owner EAGLE METALWARE