去年大跃进中,全国各地建立的许多小土水泥厂,经过整顿、巩固和提高,已逐步转为小洋水泥厂,产品质量也逐步提高。原来用钢球冲击试验法来确定水泥标号已显得不能适应需要,必须研究一种准确性更高的洋土结合的简易强度检验方法。根据以往的经验,矽酸盐水泥只要抗拉强度符合所要求的标号,抗压强度一般就无问题,小立窑水泥熟料更是如此,因为小立窑水泥熟料的游离石灰含量一般较高,因此,考虑采用抗拉强度来控制水泥标号,并设法使仪器设备简化,除使用正规抗拉机外,可取消胶砂拌和机,改用人力硬练成型机,及采取成型后立卽脱模(减少许多摸型)等办法进行。1.用人力简易硬练成型机 During the Great Leap Forward last year, many small-scale cement plants established throughout the country have been gradually converted to small ocean cement plants after rectification, consolidation, and improvement. The quality of products has also gradually increased. The original use of steel ball impact test method to determine the cement label has not been able to meet the needs, we must study a more accurate method of simple strength test of the combination of ocean and soil. According to past experience, as long as the tensile strength of the phthalic acid cement meets the required number, the compressive strength is generally no problem. This is especially true for small shaft kiln cement clinker because the free lime content of the small shaft kiln cement clinker High, therefore, considering the use of tensile strength to control the cement label, and trying to simplify the equipment, in addition to the use of regular tensile machine, can eliminate the mortar mixer, switch to manpower training machine, and take shape after the establishment of Demoulding (reducing many types of touch) and other methods. 1. Easy to use human skills hard molding machine