在熔模铸造生产中型壳强度是一个重要的问题,但是目前国内尚无恰当的仪器测定。我们采用电阻应变片式传感器测量载荷,制成了一台“型壳常温抗弯强度测试仪”,对试样加载的方向是由下向上,即下压式测试仪。用于测量型壳的湿强度和熔烧后的常 The strength of the shell is an important issue in investment casting, but at present, there is no suitable instrument in China. We use the resistance strain gauge sensor to measure the load, made a “shell at room temperature flexural strength tester”, the direction of the sample is loaded from the bottom up, that is, under pressure tester. Used to measure the wet strength of the shell and often after burning