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BSI对锻造工具钢等级的国际标准进行了修订

发布时间: 2018-08-28 09:25:26   审校:睿智  

英国标准协会(BSI)修订了其冷成型焊接钢的标准。BS EN ISO 4957:2018工具钢标准取代了1999年发布的该标准的早期版本。

此次修订会特别影响到锻造工具钢生产商、焊接工具制造商、结构钢制造商以及所有热轧、锻造、冷拉或冷轧产品生产商

具体而言,BS EN ISO 4957 标准列出了对以下锻造工具钢等级的要求:

1.非合金冷加工工具钢;

2.合金冷加工工具钢;

3.合金热加工工具钢;

4.高速工具钢。

该项标准适用于用粉末冶金技术生产的各类热轧、锻造、冷拉或冷轧产品。与废止的1999年版本相比,其主要变化有:

1.采用了标准化/标准化轧制的交货条件;

2.开始采用适用于棒材的ISO 9443和适用于板材的ISO 7788两项表面质量标准

3.采用了一项针对分拣和再加工的附加条款

4.更新了规范性参考资料

BSI制造业部门负责人丹·帕尔默(Dan Palmer)说:“BS EN ISO 4957标准对焊接制造商、机械工程师和机械零件制造商来说是个福音。钢铁行业愈发跨越国界,相应地,这一标准的要求也是全球性的。"

下列英国组织参加了BS EN ISO 4957标准的制定工作:英国不锈钢协会;冷轧型材协会;弹簧技术研究所;餐饮设备供应商协会;英国钢铁公司。

International standard for grades of wrought tool steels revised

BSI, the business standards company, has revised its standard for cold formed welded steel. BS EN ISO 4957:2018 Tool steels replaces the previous version of this standard published in 1999.

The revised standard will be of particular interest to producers of wrought tool steels; welding manufacturers; structural steel manufacturers; and all types of hot-rolled, forged, cold-drawn or cold-rolled products.

Specifically, BS EN ISO 4957 lists the requirements for the following grades of wrought tool steels:

1.      Non-alloy cold-work tool steels

2.      Alloy cold-work tool steels

3.      Alloy hot-work tool steel

4.      High-speed tool steels

The standard applies to all types of hot-rolled, forged, cold-drawn or cold rolled products produced by power metallurgy. The main changes compared with the withdrawn 1999 edition are:

1.      The delivery conditions normalized/normalized rolled has been introduced

2.      The surface quality, ISO 9443 for bars and ISO 7788 for plates now apply

3.      An additional clause for sorting and reprocessing has been introduced

4.      The normative references have been updated

Dan Palmer, Head of Manufacturing at BSI, said: “BS EN ISO 4957 will be a boon to welding manufacturers, mechanical engineers, and machine part manufacturers. The steel industry is increasingly cross-border, and fittingly, the requirements

in this standard are global.”

The following UK organizations were represented in the development of BS EN ISO 4957: British Stainless Steel Association; Cold Rolled Sections Association; Institute of Spring Technology; The Catering Equipment Suppliers Association; UK

Steel. 


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