4J42 alloy wire for discharge tube electrode and production method thereof

Abstract

The invention discloses a 4J42 alloy wire for a discharge tube electrode and a production method thereof. The production method comprises the following steps that 4J42 raw material is put into a vacuum furnace for steelmaking, and an ingot is obtained; forging and cogging are conducted, and a wire rod is formed through hot rolling; acid dipping treatment is conducted on the hot-rolled wire rod; polishing and trimming are conducted after acid dipping, and first-time drawing is conducted; annealing treatment is conducted on a semi-finished product which is subjected to first-time drawing; acid dipping and coping are conducted on the semi-finished product which is subjected to the annealing treatment; second-time drawing is conducted when it is determined that cracks do not exist; heat treatment annealing is conducted on the drawn wire rod which is subjected to second-time drawing; the surface conditions of the wire rod are checked again, coarse wire fine drawing is conducted, and heat treatment is conducted once every time a coarse wire is downwards drawn a specification till the size of a finished product is reached. According to the 4J42 alloy wire for the discharge tube electrode and the production method thereof, all factors which affect the plasticity and the yield of 4J42 in the production process are researched and found according to the actual demands of the electrode of a discharge tube, and the defects of pool plasticity and low yield which occur in subsequent machining are overcome by improving the 4J42 production technology process.

Description

technical field [0001] The invention relates to a 4J42 alloy wire and a manufacturing method thereof, in particular to a 4J42 alloy wire for a discharge tube electrode and a manufacturing method thereof. 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 d...

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.