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Warm-rolling and cogging-down method of pure molybdenum sheet

A thin slab, warm rolling technology, applied in the field of molybdenum metal processing, can solve the problems of serious environmental pollution, long production cycle, large investment, etc., and achieve the effects of small equipment investment, short production cycle and low power consumption

Active Publication Date: 2014-03-26
上海六晶科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional process has the disadvantages of large energy consumption, large investment, high cost, serious environmental pollution, and long production cycle.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The sintered 0.5mm thick pure molybdenum thin slab is repeatedly warm-rolled through multiple passes, and after the total deformation of the slab reaches 40%, it is processed by high temperature heat treatment and multiple warm-rolling. Repeat this several times to obtain a thickness of 0.04mm The pure molybdenum sheet; wherein the warm rolling temperature is 300°C; the rolling pressure is controlled at 10 tons; the pass reduction is 0.02mm; the rolling speed is 0.3m / s; the high temperature heat treatment temperature is 900°C, The time is 1.5 hours.

Embodiment 2

[0029] The sintered 0.6mm thick pure molybdenum thin slab is repeatedly warm-rolled through multiple passes, and after the total deformation of the thin slab reaches 40%, it is processed by high-temperature heat treatment and multiple warm-rolling, repeated several times to obtain a thickness of 0.05mm The pure molybdenum sheet; wherein the warm rolling temperature is 300°C; the rolling pressure is controlled at 10 tons; the pass reduction is 0.03mm; the rolling speed is 0.3m / s; the high temperature heat treatment temperature is 930°C, The time is 2 hours.

Embodiment 3

[0031] The sintered 0.65mm thick pure molybdenum thin slab is subjected to multiple passes and repeated warm rolling, and after the total deformation of the thin slab reaches 40%, it is processed by high temperature heat treatment and multiple passes warm rolling. Repeat this several times to obtain 0.08mm thickness The pure molybdenum sheet; wherein the warm rolling temperature is 350°C; the rolling pressure is controlled at 10 tons; the pass reduction is 0.04mm; the rolling speed is 0.5m / s; the high temperature heat treatment temperature is 1000°C, The time is 1.5 hours.

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Abstract

The invention relates to a warm-rolling and cogging-down method of a pure molybdenum sheet. The method includes the steps that (1) a pure molybdenum metal slab which is 0.4-1.5mm in thickness and sintered is preheated, and the temperature of the whole slab rises to the warm-rolling temperature between 200 DEG C and 400 DEG C; (2) the pure molybdenum metal slab which is preheated to the needed temperature is rolled many times by means of a rolling mill; (3) when thickness deformation amount of the pure molybdenum metal slab in the step (2) reaches 20%-40%, the pure molybdenum metal slab is placed into a high-temperature furnace to keep at the temperature between 900 DEG C and 1300 DEG C for 1 to 3 hours, and then taken out from the high-temperature furnace after being cooled; (4) the step (2) and the step (3) are repeated until the pure molybdenum metal slab reaches the needed thickness. The slab is small in thickness, the cogging-down temperature is low, the process is simple, power consumption is little, environment is protected and energy is saved.

Description

Technical field [0001] The invention belongs to the technical field of molybdenum metal processing, and particularly relates to a warm-rolled billeting method for pure molybdenum thin plates. Background technique [0002] Due to its high melting point, high elastic modulus, good shock resistance and corrosion resistance, electrical conductivity, thermal conductivity, excellent thermal fatigue resistance, and low coefficient of expansion, molybdenum is widely used in medical, metallurgical, and electrical industries. Light source, semiconductor devices, high temperature structural parts and nuclear industry and other fields. In the application of molybdenum material, the application of sheet is the most extensive, and the role of molybdenum sheet in modern industry is becoming more and more important. The traditional molybdenum sheet processing mainly adopts the following processes: powder→green compact→sintering→hot rolling→annealing→alkaline washing→multiple warm rolling→alkali...

Claims

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Application Information

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IPC IPC(8): B21B1/22
Inventor 李军正朱玉斌
Owner 上海六晶科技股份有限公司
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