In this paper, blind welding, cold shortness and hydrogen brittleness are mainly discussed as the major problems arising in underwater wet welding. 湿法焊接的主要问题是“盲焊”、“冷脆”和“氢裂”,本文介绍了克服这些弊端的工艺和方法;
By the research on forging and cold forming performance of electromagnetism pure iron, the rational forging process is brought forth, it is specially emphasized to avoid the red brittleness and blue brittleness forging temperature range for the electromagnetism pure iron. 通过对电磁纯铁锻造与冷成形性能的分析研究,给出了合理的锻造工艺,特别强调了要避开电磁纯铁的红脆与兰脆锻造温度区域。
Many factors must be considered in the design of a large sized cryogenic atmospheric pressure ammonia warehouse. The material of liquid ammonia tanks must resist the cold brittleness at-33? 设计低温常压大型氨库应考虑诸多因素,液氨贮罐的材料必须具备抗-33℃低温冷脆性能,其设计过去大多是引进的。
A brief summary of segregation. especially nonequilibrium of interface& grain boundary, is presented in this paper, and the relationship between segregation of intergranular boundary and the cold brittleness is also introduced. 简要介绍了偏聚特别是晶界非平衡偏聚研究的历史和现状.并扼要介绍了品界非平衡偏聚与材料冷脆之间的关系。
The treatment of cold brittleness of resin to pulverize PVC is an efficacious method of obtaining ultrafine powder. 对PVC树脂进行低温冷脆处理,可以有效地实现PVC树脂的超细粉碎。
Large quantity of rejected products involving edge crack and strip breakage are prone to occur in hot and cold rolling of the oriented silicon steel sheets due to high brittleness of the steel caused by its high silicon content. 取向硅钢含硅量高,钢质脆性大,在热轧和冷轧过程中容易产生大量边裂及断带轧废。
Chemical interaction between grain boundary chemistry and cold brittleness temperature. 建立了晶界化学和冷脆性温度之间的关系。
The acrylic emulsion binder had good film forming, better adhesion and chemical stability, its threadlike structures would bring weakness of heat-adhesive and cold brittleness and clogging screen. 丙烯酸酯类粘合剂具有较好的成膜性,良好的粘着力及化学稳定性,但其线型结构特点,易造成聚合物薄膜出现热粘冷脆及印花堵网等问题。
The increase of phosphorous content will decrease the ductility and toughness of the steel, especially with the increase of carbon content in steel, this phenomenon is usually called "cold brittleness". 磷对绝大多数钢种来说是有害元素,磷含量的增加会使钢的塑性和韧性降低,通常称为冷脆性。随着钢中碳含量的增加,这种现象更为严重。