采购技术条件螺母(中英对照)

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PURCHASE SPECIFICATION 采购技术条件

DOC. NO. UD2-08U1-4 REV. 1 PAGE 2 OF 4

This specification is provided descriptions for purchasing nuts material 本技术条件对采购下列材料进行了规定. 1. Specification designation 材料牌号 ASME Code Sect. II 2007Ed, SA-194M Gr.2H. 2. Name of item 零件名称 Carbon steel Jam Nuts 碳钢锁紧螺母 3. Quantity, Description of item and Size 数量,名称和型号 Description of item 名称 Heavy nuts Nominal size (mm) 型号 M20 Drawing No. or standard No. 标准号 ASME B18.2.4.5M

Part No 编号. 1

Quantity 数量 48

4. Dimension 尺寸 4.1 Nuts shall be hexagonal in shape, and in accordance with the dimension for the heavy hex series, as required by ASME/ANSI B18.2.4.6M. 螺母为六角形螺母,尺寸和形状按照 ASME/ANSI B18.2.4.6M 标准制造 4.2 Unless otherwise specified, threads shall be in accordance with ASME B1.13M and shall be gauged in accordance with ANSI/ASME B1.20.1. 除指明的不同处外,螺纹符合 ASME B1.13M 要求并且符合 ANSI/ASME B1.20.1.的要求. 4.3 The nuts shall be 8UN Series Class 2B fit. 螺母为 8UN 系列等级为 2H. 4. Manufacture 制造 Nuts shall be made by machine from hot-forged bars and shall be quenched and then tempered at a temperature not less than 455℃. 螺母由热锻制成,并且在不低于 455℃的温度下回火处理. 5. Chemical requirements 化学成分 The heat analysis of the nut materials shall conform to the chemical composition requirements

采购技术条件螺母(中英对照)

HG

PURCHASE SPECIFICATION 采购技术条件

DOC. NO. UD2-08U1-4 REV. 1 PAGE 3 OF 4

prescribed as follows. 熔炼分析化学成分应符合下表的规定 Carbon min. 最小碳 含量 0.40% Manganese max. 锰最大 含量 1.00% Phosphorus max. 磷最大 含量 0.040% Sulfur max. 硫最大 含量 0.050% Silicon max. 硅最大 含量 0.40%

Grade Symbol 等级 2H

Material 材料 Carbon Steel

6.

7.

8.

9.1 9.2 9.3 9.4 9.5

9.6 9.

Hardness requirements 硬度需求 The brinell hardness shall be approximately HB 248-352 . 螺母的硬度应当为 HB248-352 Proof load test requirement 硬度试验要求 The nuts shall be capable of with standing the proof loads of 676kN. 螺母需要在 676kN 的载荷下进行试验 Certification by manufacturer 制造厂应当标明 The manufacturer shall provide a test report performed in accordance with this purchase specification. 制造厂应当提供的符合购买要求的试验报告内容包括 Applicable Code: (ASME Code Sect. II) 2007Ed. SA-194 Gr.2H. 实施依据: 2007Ed. SA-194 Gr.2H. Steel grade: SA-194 Gr. 2H 材料等级: SA-194 Gr. 2H Chemical analysis results 化学分析结果 Mechan

ical test results 力学试验结果 The manufacturer shall report to the purchaser one copy of the method of melting and the results of macro etch test. 制造商应当提供给采购者关于热处理和硬度试验的结果的资料 Minimum tempering temperature 最小回火温度. Marking 标记