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矿用链条是采煤机械运输和牵引不可缺少的部分,使用性能的好坏,直接关系到安全生产和劳动生产率。我们厂生产的矿用圆环链,每年达二十万条左右,分布于国内许多矿区,为了能够在质量上得到保证,生产出具有良好综合性能的产品,我厂从选料、工艺、试验等多环节质量工作入手,进行了严格检查,因而在生产使用中反映较好。链条选料为25MnV,规格为φ18×64mm,各项综合机械性能符合部颁“C”级标准,即破断吨位>41吨,试验负荷下总延伸率≤1.6%,破断延伸率≥12%。我们在对成品链条性能试验中发现,涂漆与不涂漆的链条强度上是有差别的,如果
Mining chain is an indispensable part of coal mining machinery transport and traction, the performance of good or bad, is directly related to safety and labor productivity. Mine production of mine ring chain, each of up to 200,000 or so, located in many domestic mines, in order to be guaranteed in quality, to produce a product with good overall performance, I plant from the choice of materials, technology, testing And other aspects of quality work, conducted a rigorous examination, and therefore reflect better in the production and use. The selection of the chain material is 25MnV, the specification is φ18 × 64mm, the comprehensive mechanical performance conforms to the ministerial “C” class standard, namely the breaking tonnage> 41 tons, the total elongation under the test load ≤1.6% and the breaking elongation≥12%. We are in the finished product chain performance test found that paint and unpainted chain strength is different, if