Certificates

WYJ016-2004                           75Cr1

1, applicablerange: the technology conditions apply to thickness 8 ~ 20 mm, hot delivery of the saw blade steel basic state with 75 Cr1 steel plate production.

2, "and shape, weight and allow deviation

2.1 the thickness of the steel plate handled the allowable deviation and control

2.1.1 thickness of the deviation: deviation 0.4 mm, negative deviation is 0.5 mm, thickness added value: 0;

2.1.2 in order to satisfy the customer requirement of processing as much as possible the thickness of the steel plate control by the lower tolerance .

2.2 other executive according to the GB709-88 standard codes.

3, steel plate chemical composition (melting analysis) see table 1

   Table 1                                                       Wt%

 

composition	C	Si	Mn	P	S	Cr
Technology requirement	0.70 ~ 0.80	0.25 ~ 0.55	0.60 ~ 0.80	≤ 0.025	≤ 0.020	0.25 ~ 0.55

4 smeltmethods: the refined smelting out of furnace by electric furnace providingheating, and the processing VD vacuum.

5, delivery status: hot rolling steel plate to state delivery.

6, steel plates performance

6.1 steel plate don't do tensile, cold bending and impact performance inspection;

6.2 steel plate brinell hardness: no more than 380 HB

7, inspection rules

Steel should be to check andacceptance On a lotbylot basis, each batch constitute

With the same thickness and furnaceof the steel plate . Each group of no more than 30 tons of steel weight.

8, the steel plate surface quality requirements

steel surface quality inspectionone by one, the surface should comply with the provisions of the GB3274-88 standard.

9, packaging, signs and quality certificate should comply with the GB/T247-97 standard rules.