Production method for alloy filament

Abstract

The invention discloses a 4J42 alloy filament for a discharge tube electrode and a production method for the alloy filament. The production method comprises the following steps: pouring a 4J42 raw material into a vacuum furnace for making steel and forming an ingot; performing forging cogging and hot rolling to form a wire rod; performing acid washing processing on the wire rod subjected to hot rolling; polishing and trimming after acid washing, and performing first drawing; performing annealing processing on a semi-finished product subjected to first drawing; performing acid washing and grinding on the semi-finished product subjected to annealing processing; performing secondary drawing after no crack is determined to exist; performing hot-processing annealing on the wire rod subjected to secondary drawing; detecting the case of the wire rod surface again, performing crude-filament finish drawing, performing hot processing after each time of the wire rod being drawn and entering a next specification, and stopping untie the wire rod reaches the finished-product dimension. According to the technical scheme, based on the real demands on the discharge tube electrode, various factors influencing 4J42 plasticity and rolling yield during production are researched and found, and the defects that 4J42 is bad in plasticity, low in rolling yield and the like in the subsequent processing process are solved by improving the 4J42 production technology.

Description

technical field [0001] The invention relates to a production method of 4J42 alloy wire, in particular to a production method of 4J42 alloy wire for discharge tube electrodes. Background technique [0002] 4J42 alloy belongs to the expansion alloy in the precision alloy, the nickel content is about 42%, the rest is mainly iron, and has a stable low expansion coefficient (the average expansion coefficient at room temperature is 1.6X10 -6 / °C), it is widely used in aerospace, precision instruments, and electronics industries, and its main purpose is to produce electrodes for discharge tubes. Discharge tubes are used to protect the safe operation of communication systems, traffic signal systems, computer data systems, external cables and electronic instruments of various electronic equipment. At present, no other material can replace this traditional vacuum sealing material. Although the market demand for 4J42 is huge, the product quality of most domestic manufacturers fluctua...

AI Technical Summary

Problems solved by technology

However, there is no systematic research on the production process of 4J42 alloy wire specifically for the electrode cap used in electric discharge tubes, which directly affects the scientificity and rationality of the production process of this product.