To introduce structure and hole type characteristic of diamond drawing die.
介绍金刚石拉丝模组成结构、孔型特点 ;给出金刚石拉丝模国内外常用标准、拉拔不同金属用金刚石模的技术参数、我国金刚石模具的直径偏差及外形尺寸 ;对金刚石拉丝模的研磨修复时磨料的选用、研磨工艺的制定、常见缺陷产生原因及修复、孔型的测量等进行了阐
By experimental study on flexural strength of industrial waste residua concrete perforated brick with different hole type and different void ratio the factors which effect its flexural performance has been analyzed and the suggestions to enhance its flexural strength have been proposed.
通过试验研究不同孔洞率、不同孔型的工业废渣混凝土多孔砖的抗折强度,分析影响抗折性能的因素,提出提高抗折强度的措施。