Stainless steel elastomer material for weighing sensor

Abstract

The invention discloses a stainless steel elastomer material for a weighing sensor. The tainless steel elastomer material comprises the following components in percentage by mass: 0.09 percent of C, 1.35 percent of Si, 0.035 percent of P, 0.030 percent of S, 1.00 percent of Mn, 15.0-17.0 percent of Cr, 4.50-8.00 percent of Ni, 3.50-5.50 percent of Cu, 0.15-0.45 percent of Nb and the balance of Fe. Stainless steel is high in mechanical performance after heat treatment, the hardness can reach HRC 42-47, the ultimate strength can reach 135 kg / mm<2>, the coefficient of linear expansion is 11.1x10<-6>m / DEG C; therefore, the stainless steel elastomer material is equivalent to the commonly-used alloy steel 40CrNiMoA.

Description

technical field [0001] The present application relates to the technical field of sensors, in particular to the elastic body material technology of load cells. Background technique [0002] The performance of the load cell determines the accuracy, stability and reliability of the weighing instrument. [0003] At present, the elastic material of the load cell is mainly divided into three categories: aluminum alloy (LY12), alloy steel (40CrNiMoA), stainless steel (0Cr17Ni4Cu4Nb), the first two materials are the most commonly used, and the processing technology, heat treatment process and manufacturing process have been very Mature. However, at present, the research and production of domestic stainless steel sensors are in the initial stage, the market demand is not large, and the market scale for mass production of stainless steel sensors has not yet been formed. The accuracy of stainless steel sensors is low, reaching GB / T7551-1997 "Weighing Sensor" national standard and In ...

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Problems solved by technology

[0004] 1. The basic research on stainless steel sensor elastomer materials is not enough, and its composition, smelting process, rolling requirements, and supply status are not well understood

[0005] 2. The domestic heat treatment process of stainless steel materials has not been fully grasped, and the impact of heat treatment on sensor performance indicators (mainly hysteresis indicators) has not been resolved