Hyperpure alloy wire or semi-tandem rolling wing-shaped holes for bar material and semi-tandem rolling technology of using hyperpure alloy wire or semi-tandem rolling wing-shaped holes for bar material

Abstract

The invention discloses a set of hyperpure alloy wire or semi-tandem rolling wing-shaped holes for a bar material. The hyperpure alloy wire or semi-tandem rolling wing-shaped holes for the bar material comprises 1-7 wing-shaped holes of a roughing mill, 8-13 wing-shaped holes of an intermediate mill and 14-19 wing-shaped holes of a finishing mill. In addition, the invention further discloses a technology for carrying out the semi-tandem rolling by adopting the hyperpure alloy wire or the semi-tandem rolling wing-shaped holes for the bar material. Compared with the prior art, the technology provided by the invention can produce high quality heat-resisting alloy 40Cr25Ni35W2Nb2MnSi, corrosion resistant alloy Cr16Mo16W4Fe6Ni, and hot rolled wire rod, and the qualification rate is 98 percent. After surface inspection, the defects of crack, folding, cicatrization and scratch do not exist, the requirements of GB / T15008-2008 are met, and the regulations specified by GB / T14981-2009 to size, appearance and allowable deviation are met.

Description

technical field [0001] The invention belongs to the field of ferrous metallurgy high-alloy material processing. Specifically, the invention relates to a semi-continuous rolling processing part of an ultra-pure alloy wire or bar and a semi-continuous rolling process using the same. Background technique [0002] The classification of ultra-pure alloys mainly includes ultra-pure electrothermal alloys, ultra-pure heat-resistant alloys, ultra-pure corrosion-resistant alloys, and ultra-pure precision alloys. Its characteristics are ① narrow thermal processing temperature range (1050 ~ 1150 ℃) only about 100 ℃. ② There is a large difference in the expansion coefficient of each grade of alloy; ③ The resistance to thermal deformation is large (at 1100°C, the strength is 120mpa). [0003] At present, domestic high-quality steel wire and bar hot-rolling production lines mostly produce carbon structural steel, composite steel, bearing steel, die steel, stainless steel and some alloys. ...

AI Technical Summary

Problems solved by technology

② There is a large difference in the expansion coefficient of each grade of alloy; ③ The resistance to hot-working deformation is large (at 1100°C, the strength is 120mpa)

[0004] ①During the rolling process, the temperature drops rapidly. After several passes of rolling, the temperature drops below 1000°C. If further rolling occurs, the rolled piece will be broken or the equipment will be damaged.

[0005] ② The pass design cannot adapt to the characteristics of large differences in width and expansion coefficients, that is, the pass shape meets the deformation requirements of these grades of alloys, but cannot meet the requirements of other grades of alloys. Therefore, rolls with different pass types can only be prepared. is impossible

[0007] In view of the above situation, my country has not yet produced wire and rod materials such as heat-resistant alloys and corrosion-resistant alloys.

However, the production specifications of electrothermal alloys, precision alloy wires and bars are not complete, the product quality is poor, the production efficiency is low, and the cost is high, which cannot meet the requirements of industrial production and social life.

Can not meet the requirements of continuous development of production technology

Therefore, to provide a low-cost, high-efficiency, high-quality ultra-pure alloy material wire, rod production equipment and process method to solve the user's ultra-pure heat-resistant alloy, ultra-pure corrosion-resistant alloy wire, rod products, solve the problem of electric heating alloy , Precision alloy wire, bar product specifications are incomplete, poor product quality, low production efficiency, high cost and other issues are very necessary

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