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Chuyển đổi từ EN 287-1 sang ISO 9606

[Ngô Lê Thông] Với những doanh nghiệp xuất khẩu sản phẩm hàn sang châu Âu, chứng chỉ thợ hàn hồ quang (cho thép) theo tiêu chuẩn EN 287-1 sẽ được thay thế dần bằng chứng chỉ theo tiêu chuẩn ISO 9606-1. Từ giờ đến hết tháng 10 / 2015 không còn nhiều (khi EN 287-1 hết hiệu lực, mặc dù chứng chỉ cũ vẫn có thể được gia hạn đến 10 / 2017). Bạn đã làm gì để giúp anh em thợ hàn của công ty mình có chứng chỉ hợp lệ chưa?

Tải về tài liệu tham khảo: http://www.nal-ans.be/sites/default/files/3/ewf-654-13_ewf-guide-for-transition-287-to-9606.pdf

(Backup link: http://www.mediafire.com/view/j5mbxe1cjclcc2l/ewf-654-13_ewf-guide-for-transition-287-to-9606.pdf)

Bảng so sánh giữa

 

Essential Variable EN 287 Pt1 EN ISO 9606 Pt1 Comments
  clause no   clause no
welding process yes cl 5.2 yes cl 5.2  
material group within ISO/TR 15608 Group Table 2 no   material group is not an essential variable in ISO 9606/1
product type (plate/pipe) plate qualifies pipe >150mm in PA PB PC cl 5.3 plate qualifies pipe >75mm in PA PB PC PD cl 5.3 pipe≥25mm OD qualifies plate in both specs
pipe outside diameter yes Table 6 yes Table 7  
material thickness butt – yes

fillet – yes

Table 5

Table 7

no

yes

cl 5.7 and Table 6
Table 8
In ISO 9606/1 the qualified thickness of a butt weld is the deposit thickness
joint type (butt/fillet) butt does not qualify fillet cl 5.4 butt does not qualify fillet cl 5.4
Annex C
fillet weld test supplementing butt test is permitted in both specs
material backing – deletion yes Table 9 yes Table 11  
filler material group no   yes cl 5.5 ISO 9606/1 includes 6 separate filler metal groups – see Table 2 and Table 3
filler/autogenous deletion or addition of filler metal – yes cl 5.2 addition of filler metal  – yes cl 5.6 In ISO 9606/1 filler additions qualify for autogenous but not vice versa
filler material type (electrode/wire) solid qualifies cored and vice versa : process 135:138 Table 4 solid qualifies cored and vice versa: process 121, 125 .  135, 138 cl 5.2

 

ISO 9606 has added submerged arc welding to the qualified processes
filler material coating/core yes Table 3
Table 4
yes Table 4
Table 5
both specs cover coated electrodes and cored wire
weld deposit thickness butt – yes
fillet – no
Table 5 butt – yes
fillet – no
Table 6 the parent metal thickness is the essential variable for fillet welds
welding position yes cl 5.8 Table 8 yes cl 5.8 Table 9 Table 10 ISO 9606/1 has separated butt and fillet weld positions into two tables
metal transfer mode no   yes cl 5.2 In ISO 9606/1 dip transfer qualifies spray but not vice versa – process 131, 135, 138
single/multi layer yes – fillet welds only Table 10 yes – fillet welds only Table 12 multi-layer qualifies single but not vice versa
acceptance standard ISO 5817
QL B/C
cl 7 ISO 5817
QL B/C
cl 7  
validity confirmed at 6 month intervals cl 9.2 confirmed at 6 month intervals cl 9.1  
       prolongation every 2 years by examining body cl 9.3 retest at 3 years OR prolonged every 2 years by examining body OR verified ISO 3834 system cl 9.2 Method of revalidation must be stated on the certificate at time of initial test

Nguồn: http://www.twi-global.com/technical-knowledge/job-knowledge/a-comparison-of-bs-en-287-part-12011-with-bs-en-iso-9606-part-1-130/

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