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严格按图纸和技术文件要求的铸铁牌号进行生产,是执行国家对各类机械产品的技术标准的一个重要环节,也是保证产品质量的基本前提。我厂从62年第四季度开始,通过整顿大炉管理王作之后,就一直坚持按国家规定的试验方法(JB301—62)进行生产。即按每炉、每批、每种配料浇注一组试棒进行物理性能和化学成份检验。从63年迄今,共进行3000多批次铁水。除54次不合格外,其余都超过图纸要求的铸铁牌号性能。今年以来,又试验了183批次铁水,合格
In strict accordance with the drawings and technical documents required for the production of cast iron grades, is the implementation of national technical standards for all types of mechanical products is an important part of the guarantee of product quality is the basic premise. Since the fourth quarter of 62, our factory has been insisting on the production according to the national test method (JB301-62) after reorganizing the furnace management Wang Zuo. That is, according to each furnace, each batch, each batch of test material pouring a set of sticks for physical properties and chemical composition test. From 63 years to date, a total of more than 3,000 batches of hot metal. In addition to 54 failed, the rest exceeded the requirements of the cast iron castings performance. This year, it has tested 183 batches of molten iron, qualified