A deep drawing method for vanadium alloy sheet metal

Abstract

The invention discloses a deep drawing forming method of a vanadium alloy sheet. The method comprises the following steps that the vanadium alloy sheet is subjected to vacuum annealing treatment; a layer of stainless steel base plate is arranged under the vanadium alloy sheet; the vanadium alloy sheet and a die are lubricated with a lubricating agent; and the vanadium alloy sheet and the stainless steel base plate are subjected to deep drawing forming separately. The deep drawing forming method of the vanadium alloy sheet has the characteristics that heating does not need to be conducted, the safety is good, the precision of a vanadium alloy shell is high, and the quality is stable.

Description

technical field [0001] The invention relates to a deep drawing forming method of a vanadium alloy sheet material. The invention is suitable for deep drawing of vanadium alloy sheet material or other low plasticity sheet material which is not suitable for hot forming. Background technique [0002] Vanadium alloy is internationally recognized as an ideal candidate material for a key structural component of a fusion reactor. The most notable advantages are low activation characteristics and excellent high-temperature strength properties under neutron irradiation conditions. In addition, vanadium alloys also have good resistance to radiation-induced expansion and damage, good dimensional stability, good thermal conductivity, low thermal expansion coefficient and elastic modulus, low biohazardous safety and environmental protection, and good anti-corrosion properties. Creep performance, good processing performance, and good corrosion resistance to liquid lithium. Therefore, the...

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Problems solved by technology

Since the vanadium alloy will produce V at high temperature 2 o 5 , which is a highly toxic substance. Therefore, vacuum sheathed forging is usually used in the material preparation process such as ingot opening and extrusion. If the shell is formed, this method is also used. Due to its large deformation, there are The risk of releasing toxic substances due to the rupture of the sheath, and the process is more complicated, the margin is large, and the cost is high

However, ordinary room temperature deep drawing is used. Due to the poor plasticity and high viscosity of the vanadium alloy, a large number of built-up edge is formed on the working surface of the mold, which increases the friction force and is prone to cracking. The qualified rate of the product is very low.

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