粗粒度磨具的生产、在磨具总产量中占很大比重,是一种“量大而广“的产品。 过去这类产品的硬度检查,规定使用苏联喷砂机标准,由于这个标准不能反映磨具的真实硬度,故长期以来,大量陶瓷和树脂的粗粒度磨具不经硬度检查即行出厂,这不仅给生产厂提高自己的产品质量带来困难,而且各生产厂之间的产品硬度也无法统一,是磨料行业多 Coarse-grained abrasive production, accounting for a large proportion of the total output of abrasive, is a “large and wide” products. In the past, the hardness inspection of such products required the use of the Soviet blasting machine standard. Since this standard does not reflect the actual hardness of abrasive tools, a large number of coarse-grained abrasive articles of ceramic and resin have long been shipped without hardness check, Production plants to improve their own product quality problems, but also between the hardness of the products can not be uniform between the manufacturers, the abrasive industry is more