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JB/T 9180.1-2014钢质冷挤压件第1部分:公差本部分规定了钢质冷挤压实心件、空心件、法兰件的尺寸公差和使用方法。本部分适用于用冷挤压方法成形的直径不大于120 mm的工件。JB/T 9180.2-2014钢质冷挤压件第2部分:通用技术条件本部分规定了钢质冷挤压件的要求、试验方法、检验规则及标志、包装、运输、贮存。本部分适用于用冷挤压方法成形的工件。JB/T 12028-2014涡旋压缩机铝合金精锻涡旋盘通用技术条件
JB / T 9180.1-2014 Steel cold extrusions - Part 1: Tolerances This section specifies the dimensional tolerances and the use of steel cold extrusion solid parts, hollow parts, flange parts. This section applies to the use of cold extrusion forming diameter of not more than 120 mm of the workpiece. JB / T 9180.2-2014 Steel cold extrusion parts - Part 2: General technical requirements This section provides the requirements for cold extrusion of steel, test methods, inspection rules and signs, packaging, transportation, storage. This section applies to cold extrusion forming parts. General specification for swirl compressor aluminum alloy forged scroll