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Ultra-thin precision deep drawing molding rolling method for molybdenum sheet

A precision, molybdenum sheet technology, applied in metal rolling, metal rolling, rolling mill control devices, etc., can solve the problems of difficult deep drawing, low material utilization, single rolling direction, etc., and achieve easy precision deep drawing. The effect of punching and drawing, reducing production cost and simple process operation

Inactive Publication Date: 2008-10-08
YIXING BAODENG ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The specification of ordinary molybdenum billet is usually 145×60×12mm. During the rolling process of processing it into thin molybdenum sheet, the conventional operation generally does not have a clear coordination of the control of thickness, temperature and rolling amount. Warm, rolling, and thickening processes, which will cause confusion in the recrystallization temperature and make it difficult to determine and master the annealing temperature. In addition, in these rolling processes, the rolling direction is single and unchanged, which will cause the grain expansion to have a certain orientation In this way, the thinner the thinner, the more serious the cracking phenomenon, the lower the utilization rate of the material, the more difficult it is for deep drawing, and the poor plasticity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1, a method for rolling molybdenum sheet formed by ultra-thin precision deep drawing, molybdenum billet undergoes secondary hot rolling, secondary warm rolling, pickling and rinsing, and then undergoes three times of cold rolling and annealing to the required thickness. Using 12mm thick molybdenum billet as raw material, the steps are:

[0011] Secondary hot rolling: Heat the molybdenum billet at 1280°C-1330°C for 60-75 minutes, hot-roll the upper rolling mill to a thickness of 4-5mm for the first time, and then heat the molybdenum billet at 1180°C-1230°C for 60- After 75 minutes, the upper rolling mill performs the second hot rolling to a thickness of 2-2.5mm;

[0012] Secondary warm rolling: Heat the molybdenum billet after the second hot rolling at 1080°C-1130°C for 60-75 minutes, warm roll it for the first time on the upper rolling mill to a thickness of 1-1.1mm, and then cut the molybdenum billet into pieces. The billet is heated and kept at 980°C-1030°...

Embodiment 2

[0015] Embodiment 2, rolling with 16mm thick molybdenum billet raw material, the method is the same as embodiment 1, the rolling thicknesses of secondary hot rolling and secondary warm rolling are controlled respectively: 7-8mm, 3-4mm, 1-1.5mm , 0.7-0.8mm.

Embodiment 3

[0016] Embodiment 3, with 20mm thick molybdenum billet raw material, method is the same as embodiment 1, the rolling thickness of secondary hot rolling, secondary warm rolling control respectively: 8-9mm, 4-5mm, 1.5-2mm, 0.7-0.8 mm.

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Abstract

The invention discloses a shaping molybdenum slice drawing method through ultra-thin accurate deep drawing, which comprises the following steps: twice-hot rolling molybdenum billet; twice-warm rolling; acid-cleaning; poaching; annealing to the needed thickness through twice cool-rolling; getting the product. This craft possesses simple operation and the yield can reach 90%, which can increase the yield of molybdenum slice shaping and decrease the cost of production.

Description

technical field [0001] The invention relates to a molybdenum sheet rolling process, in particular to a method for rolling a common molybdenum billet into an ultra-thin precision deep-drawn special molybdenum sheet. Background technique [0002] The specification of ordinary molybdenum billet is usually 145×60×12mm. During the rolling process of processing it into thin molybdenum sheet, the conventional operation generally does not have a clear coordination of the control of thickness, temperature and rolling amount. Warm, rolling, and thickening processes, which will cause confusion in the recrystallization temperature and make it difficult to determine and master the annealing temperature. In addition, in these rolling processes, the rolling direction is single and unchanged, which will make the grain expansion have a certain orientation In this way, the thinner the thinner, the more serious the cracking phenomenon will be, which will make the material utilization rate low,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18B21B37/16B21B37/74B21B3/00C23G1/00
Inventor 俞保文俞智登
Owner YIXING BAODENG ALLOY