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Manufacturing process of high-strength circular-drawing six-angle steel

A manufacturing process, the technology of hexagonal steel, applied in the direction of manufacturing tools, wire drawing dies, metal processing equipment, etc., can solve the problems of reducing the yield and work efficiency, the cold drawing process cannot be completed, and bamboo-shaped wear, etc., to improve processing efficiency , to ensure the size and surface finish, easy to operate

Inactive Publication Date: 2019-08-16
江油华冶特材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the high strength of high-strength cold-drawn steel, it is difficult to form during the cold-drawing process, it is easy to damage the mold, and it is easy to have surface defects such as surface scratches and bamboo-shaped wear, resulting in a high scrap rate due to serious surface defects
At the same time, due to the high strength, if there are no good lubrication measures, it is easy to cause the bar to be broken during the cold drawing process, thereby reducing the yield and work efficiency, and even making the cold drawing process impossible to complete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The manufacturing process route of a high-strength round-drawn hexagonal steel is as follows: the billet is soaked in oxalate at 400° C. for 30 minutes, and then neutralized and cleaned with alkaline solution; Carry out annealing and solid solution; after the solubilized billet is grassed and saponified, then lubricated with a lubricant, wherein the total acidity of the grassed liquid is 25D, the temperature of the grassed liquid is controlled to 65 ° C, and the grassing time Controlled for 25min; the lubricant is a mixture of liquid paraffin, metal nano powder, and graphene oxide in a mass ratio of 1:0.5:0.01; the lubricated blank is cold drawn, and the diameter of the die hole of the cold drawing die is set to 6mm ; The fixed width of the drawing die is 5mm; the entrance cone angle α of the cold drawing die hole is 8°; the exit cone angle β is 30°; The number of times of hyperbolic rolling and straightening of the material is 3 times, then it is polished, and the qual...

Embodiment 2

[0022] The manufacturing process route of a high-strength round-drawn hexagonal steel is as follows: the billet is soaked in oxalate at 50° C. for 20 minutes, and then neutralized and cleaned with alkaline solution; Carry out annealing and solid solution; after the solubilized billet is grassed and saponified, then lubricated with a lubricant, wherein the total acidity of the grassing liquid is 35D, the temperature of the grassing liquid is controlled to 60 ° C, and the grassing time Controlled for 20min; the lubricant is a mixture of liquid paraffin, metal nanopowder, and graphene oxide in a mass ratio of 1:0.5:0.05; the lubricated billet is cold drawn, and the diameter of the die hole of the cold drawing die is set to 8mm ; The fixed diameter of the drawing die is 6mm; the entrance cone angle α of the cold draft hole is 9°; the exit cone angle β is 35°; The number of times of hyperbolic rolling and straightening of the material is 3 times, then it is polished, and the qualit...

Embodiment 3

[0024] The manufacturing process route of a high-strength round-drawn hexagonal steel is as follows: the billet is soaked in oxalate at 60° C. for 10 minutes, and then neutralized and cleaned with alkaline solution; Carry out annealing and solid solution; after the solubilized billet is grassed and saponified, then lubricated with a lubricant, wherein the total acidity of the grassing liquid is 40D, the temperature of the grassing liquid is controlled to 55 ° C, and the grassing time Controlled for 15min; the lubricant is a mixture of liquid paraffin, metal nanopowder, and graphene oxide in a mass ratio of 1:1:0.01; the lubricated blank is cold drawn, and the diameter of the die hole of the cold drawing die is set to 14mm ; The fixed diameter of the drawing die is 8mm; the entrance cone angle α of the cold drawing die hole is 10°; the exit cone angle β is 45°; The number of times of hyperbolic rolling and straightening of the material is 3 times, then it is polished, and the q...

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Abstract

The invention discloses a manufacturing process of high-strength circular-drawing six-angle steel. The manufacturing process route sequentially comprises the steps of preparation of a blank material,surface cleaning, tip rolling, annealing and solid solution, blank lubrication, cold drawing, straightening, polishing and quality inspection and packaging, wherein a lubricant used for lubricating the blank material is a mixture of liquid paraffin, metal nano-powder and graphene oxide, the diameter of a die hole of a cold-drawing die is 6-14 mm, and the width of a diameter-fixed belt is 5-8 mm. According to the manufacturing process, cold drawing is adopted after surface lubrication treatment, so that the machining efficiency is improved, and the industrial amplification production requirements are met; and meanwhile, the cold drawing die hole is reasonably set, so that the deformation requirement is met, the drawing force is small, drawing is stable, the deformation is uniform, the drawing die is uniformly abraded, the size and the surface smoothness of a cold drawing material are ensured, then the cold-drawn steel has relatively high surface smoothness, and the requirement for the surface quality of the cold-drawn steel in the aerospace industry is met.

Description

technical field [0001] The invention relates to the technical field of metal processing, in particular to a manufacturing process of high-strength round-drawn hexagonal steel. Background technique [0002] Due to the high strength of high-strength cold-drawn steel, it is difficult to form during the cold-drawing process, the mold is easily damaged, and surface defects such as surface scratches and bamboo-shaped wear are prone to occur, resulting in a high rejection rate due to serious surface defects. At the same time, because of the high strength, if there is no good lubrication measures, it is easy to cause the bar to be broken during the cold drawing process, thereby reducing the yield and work efficiency, and even making the cold drawing process impossible. Therefore, a manufacturing process of high-strength round-drawn hexagonal steel with high yield is urgently needed in practice. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present in...

Claims

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Application Information

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IPC IPC(8): B21C1/02B21C3/02B21C9/02B21C43/02C21D1/26
CPCB21C1/02B21C3/02B21C9/02B21C43/02C21D1/26
Inventor 杨君
Owner 江油华冶特材有限公司
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