Three-layer composite electric contact manufacturing process

Abstract

This invention relates to a triad electric contact making technology, which includes the triad joint composed of the argent alloy ply, copper ply, iron ply, wherein the rare earth material layer added between the copper ply and iron ply is used as the transition material; the compound joint between each layer has the following steps: iron ply anneal intenerate - copper ply anneal planer - argent ply alloy planer - argent alloy ply, copper ply, rare earth material layer, iron ply polishing and pickling - argon protect welding - hot rolling - diffusion - cold rolling - diffusion anneal - removing crack border - stuffing material - the first anneal - the first cleaning and polishing - molding-the second anneal - the second cleaning - polishing; wherein the hot rolling temperature is 500DEG.-700DEG., heating preservation for 1.5-2 hours, then hot rolling, and dividing the providing quantum into three times to mould. The advantage of this invention is that the quality is stable, the joint intension between the compound layers is high; the thickness of each compound layer is uniform, the electric capability is stable, which improve the eligibility rate of the products greatly.

Description

technical field [0001] The invention relates to the field of production technology of electrical control components. In particular, it relates to a high-reliability and stable electrical property that uses a transition material layer between the copper layer and the iron layer to improve the bonding strength between the layers, and prevents copper and iron from being oxidized by argon shielded welding before hot rolling. Composite electrical contact manufacturing process. The three-composite electrical contact is widely used in temperature controllers. Background technique [0002] The electrical contact is an important component in the electrical control system. It is responsible for the task of turning on and breaking the current. Its performance directly affects the reliability, stability and accuracy of the control system and signal transmission system. Therefore, it is called " Electrical Heart". [0003] At present, the composite electrical contact products supplied...

AI Technical Summary

Problems solved by technology

[0008] The manufacturing process of the three-composite electric contact of the present invention is to add a transition material layer between the steel layer and the iron layer, so that the physical performance contrast between the "transition" layer and the layer is too large, and the bonding strength between the layers is improved; And before hot rolling, the layers of silver alloy, copper and iron are sealed by argon shielded welding to ensure that there is no air in front of each layer to avoid oxidation of copper and iron; at the same time, the feed rate during the rolling process is strictly controlled, divided into 2-3 Each time the plate is rolled into a plate, the percentage of the feed rate must be controlled each time in order to control the uniform thickness of each layer of the plate; in order to eliminate the stress caused by punching and pressing between the layers of the semi-finished product and the finished product, annealing is added during the production process Treatment process, in order to solve the problem of desilvering or deferrization layer, uneven thickness of each composite layer, etc.; thus realize the three-composite electrical contact manufacturing process with stable electrical performance and improved reliability

Images