Primary-drawing forming method for special-shaped rod

A special-shaped and special-shaped rod technology, which is applied in the field of special-shaped rod one-draw molding, can solve the problems of difficult to meet customer requirements, slow cold drawing speed, low output, etc., and achieve the effect of improving the upper limit of material performance, eliminating knife marks, and increasing production.

Active Publication Date: 2016-12-21
WUXI XINGCHENG HUAXIN STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the special-shaped rods and bars in the cold finishing plant have high strength requirements (product use: bolts and nuts, etc.), the original process steps are solid solution - round bar straightening - peeling - sharpening - sandblasting - cold drawing - solid solution - pickling - Special-shaped straightening - Grinding - Sandblasting - Cold drawing - Cutting - Special-shaped rod straightening - Special-shaped rod polishing - Inspection - Packaging, multi-pumping process is difficult to meet customer requirements, when producing high-strength products, it is easy to produce strains, and Slow cold pumping speed and low output

Method used

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Embodiment Construction

[0018] The present invention will be further described below in combination with specific embodiments.

[0019] The method for drawing and forming special-shaped rods comprises the following steps:

[0020] S1: One-time solid solution; the solid solution temperature is 1040°C-1150°C, the solid solution time is 1-2 hours, and the cooling method is water cooling;

[0021] S2: Round rod straightening, the distance between the rollers for the first round rod straightening is 45mm, and the angle is 11-19 degrees, and the distance between the straightening rollers for the second round rod straightening is 39.5mm, and the angle is 11-19 degrees;

[0022] S3: peeling, peeling speed 4-5 m / min, peeling size 39.5mm;

[0023] S4: Grinding, grinding amount 0.3mm, grinding speed 0.4-0.5 m / min;

[0024] S5: sharpened, the length of the sharpened head is 170-200mm, and the sharpened size is 30.0-30.5mm;

[0025] S6: Secondary solid solution, the solid solution temperature is 1040°C-1150°C,...

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PUM

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Abstract

The invention discloses a primary-drawing forming method for a special-shaped rod. The method comprises the following steps: primary solid solution treatment; round rod straightening; peeling; grinding; sharpening; secondary solid solution treatment; pickling; abrasive blasting; cold drawing; cutting; special-shaped rod straightening; and inspection and packaging. The deformation is increased by primary cold drawing, and the upper limit of a material property is improved so as to satisfy the demand of high strength of the material required by a client; the cold drawing step is replaced by round rod straightening and grinding step, so as to eliminate cutter marks, bruises, surface burrs and the like by way of grinding, and therefore, the product quality is improved; the cold drawing speed is increased from 1.5-2.0m / min to 2.5-3m / min, so that the output is improved.

Description

technical field [0001] The invention relates to a method for one-pump forming of special-shaped rods. Background technique [0002] When the special-shaped rods and bars in the cold finishing plant have high strength requirements (product use: bolts and nuts, etc.), the original process steps are solid solution - round bar straightening - peeling - sharpening - sandblasting - cold drawing - solid solution - pickling - Special-shaped straightening - Grinding - Sandblasting - Cold drawing - Cutting - Special-shaped rod straightening - Special-shaped rod polishing - Inspection - Packaging, multi-pumping process is difficult to meet customer requirements, when producing high-strength products, it is easy to produce strains, and The cold pumping speed is slow and the output is low. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the above-mentioned technologies, thereby providing a method for one-pump forming of speci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 苏益亦王利陶建明赫英如满尊号
Owner WUXI XINGCHENG HUAXIN STEEL
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