Production process of non-annealed wire material for pulling rivet pull rod

A production process, annealing-free technology, applied in wire drawing dies and other directions, can solve problems such as poor stability of rivet tie rods, and achieve the effects of improving service performance and yield, good uniformity of strips, and good market prospects.

Inactive Publication Date: 2016-04-13
DONGGUAN KELEE STEEL WIRE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a production process for annealing-free wire rods for rivets, which can effectively solve the problem of poor stability of existing rivet rods

Method used

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  • Production process of non-annealed wire material for pulling rivet pull rod

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Material selection: Al-killed steel material is selected, and its chemical composition contains: 0.16% C, 0.04% Si, 0.61% Mn, 0.015% P, 0.010% S, 0.030% Al, The rest is Fe;

[0021] (2) Drawing: use a wire drawing machine to draw the aluminum-killed steel material, select a wire drawing die, the working cone angle of the wire drawing die is 14°, and the sizing length is 2.5 mm, and the total compression rate is large, and the part is used for drawing. The principle of small compression rate is carried out, wherein the total compression rate is 60%, and the partial compression rate is 15%.

[0022] The wire obtained after the treatment of this embodiment is subjected to the inspection of chamfer size, spheroidization rate, grain size, tensile strength and hardness, and the inspection method of chamfer size, spheroidization rate, grain size, tensile strength and hardness It is an existing mature technology, and the inspection methods of chamfer size, spheroidization ...

Embodiment 2

[0025] (1) Material selection: Al-killed steel material is selected, and its chemical composition contains: 0.19% C, 0.09% Si, 0.89% Mn, 0.25% P, 0.020% S, 0.070% Al in mass %, The rest is Fe;

[0026] (2) Drawing: use a wire drawing machine to draw the aluminum-killed steel material, select a wire drawing die, the working cone angle of the wire drawing die is 16°, and the sizing length is 3.0 mm, and the total compression rate is large and the part is used for drawing. The principle of small compression rate is carried out, wherein the total compression rate is 65%, and the partial compression rate is 12%.

[0027] The wire rod obtained after the treatment of this embodiment is carried out tensile strength, Vickers hardness and tolerance inspection, the inspection method of tensile strength, Vickers hardness and tolerance is existing mature technology, here the tensile strength, Vickers hardness and tolerance are tested. The inspection method of the tolerance is not describe...

Embodiment 3

[0029] (1) Material selection: Al-killed steel material is selected, and its chemical composition contains: 0.17% C, 0.06% Si, 0.75% Mn, 0.136% P, 0.015% S, 0.049% Al in mass %, The rest is Fe;

[0030] (2) Drawing: Use a wire drawing machine to draw the aluminum-killed steel material, select a wire drawing die, the working cone angle of the wire drawing die is 15°, and the sizing length is 2.7mm. The principle of small compression rate is carried out, wherein the total compression rate is 70%, and the partial compression rate is 10%.

[0031] The wire rod obtained after the treatment of this embodiment is carried out tensile strength, Vickers hardness and tolerance inspection, the inspection method of tensile strength, Vickers hardness and tolerance is existing mature technology, here the tensile strength, Vickers hardness and tolerance are tested. The inspection method of the tolerance is not described in detail, and the data obtained from the inspection are: the tensile st...

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Abstract

The invention discloses a production process of a non-annealed wire material for a pulling rivet pull rod. The production process comprises the following steps: (1) selecting materials, namely selecting an aluminum killed steel material which comprises the following chemical components in percentage by mass: 0.16% to 0.19% of C, 0.04% to 0.09% of Si, 0.61% to 0.89% of Mn, 0.015% to 0.25% of P, 0.010% to 0.020% of S, 0.03% to 0.070% of Al and the balance of Fe; (2) drawing, namely drawing the aluminum killed steel material by using a wire drawing machine; selecting a wire drawing mold of which the working taper angle is 14 to 16 degrees and the sizing length is 2.5mm to 3.0mm; simultaneously, performing wire drawing according to rules that the total compression rate is large and the part compression rate is small, wherein the total compression rate is larger than or equal to 60%, and the part compression rate is smaller than or equal to 15%. A wire material produced by the production process disclosed by the invention is small in scattering difference in tensile strength within a specific range so as to satisfy the riveting requirements of the type of products; a steel wire is bright and smooth in surface and stable in tensile strength and physical properties; a penetrating rod is good in uniformity; the product is small in wire diameter tolerance and high in wire diameter stability.

Description

technical field [0001] The invention relates to the technology in the field of wire rod processing, in particular to a production process for annealing-free wire rods for rivets. Background technique [0002] As a novel fastener, blind rivets have attracted more and more attention. Because of its many unique advantages, it replaces bolted connection and welding in many fields, making various structural parts compact, light, beautiful in shape, easy to use, and labor-saving. Therefore, it is widely used in aircraft, ships, Automobiles, machinery, household appliances, electrical instruments, architectural decoration, luggage and containers and other industries. [0003] At present, the material grades of rivet pull rods used in China include high-quality carbon structural steel wire, alloy structural steel wire, stainless steel wire for cold upsetting or non-ferrous metal wire. The variety, specification and output of rivets have been greatly developed. From a single Core p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C1/02B21C3/02C22C38/02C22C38/04C22C38/06
CPCB21C1/02B21C3/02C22C38/002C22C38/02C22C38/04C22C38/06
Inventor 肖杰王斯华
Owner DONGGUAN KELEE STEEL WIRE
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