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Brand: Yanjing, Descrip.:1.different sizes, 2.high quality, 3.good service, 4.Yanjing receives China Patent for Invention - details see: https://www.machineto.com/polar-115-paper-cutting-knife-10331656

round blade

1 Pass the ISO9001 quality certification

2 The brand yanjing receives China Patent for Invention

3 Maximum Length: 5500mm

4 Maximum Diameter: 1500mm,

5 Materials:5CrW2Si, 6CrW2Si, Cr12MoV, 9CrSi, H13,and

self-developed H13K,HMB and HMK high alloy series

6 Features:High intensity, high hardness, high toughness, and high hardenability, etc.

7 Blade Incision: Smooth without burr

8 Working Time: A long working life

9 Applicable Industries: Widely used in industries of steel, rubber, papermaking, etc

10Technology: Each technical index reaches the international standard

11 the materials details

1)H13K ( 4Cr5WMoSiVK )

Chemical Composition Weight %

C	Cr	Mo	W	V	Si	Mn	S	P
0.45~0.55	4.50~5.5	1.75~2.5	1.75~2.5	1.0~ 1.70	1.0~ 1.5	0.24~0.50	≤0.02	≤0.02

σb2800~3100N/N/mm2

αk 24.8f.m/cm2

HRC 59

Cutting steel quantity 2200025000t

2) HMB

Chemical Composition Weight %

C	Cr	Mo	W	V	Si	Nb	tombarthite
0.48 0.65	3.50 5.50	1.80 3.0	1.80 3.0	0.6 1.40	0.6 1.20	0.20 0.8

σb31003650N/mm2

αk13.616.4f.m/cm2

HRC6062

Each one of the four cutting edges of high strength HMB steel blade cuts 30 thousand ton steel

All four edges can be used and maintain performance after figured

in theory, cut δ≤60mm2 steel

3) HMK Chemical Composition Weight %

C	Cr	Mo	W	V	Ni	Si	Nb	tombarthite	others
0.52~ 0.62	4.5~ 7.0	1.75~ 3.25	1.5~ 2.5	1.0~ 2.0	4.5~ 7.0	0.8~ 1.2	0.3~ 1.0

σb35004100N/mm2

HRC61~63

αk 22.4f.m/cm2

Applicable to cut high strength section steel and alloy plates

Each one of the four cutting edges of high strength HMB steel blade cuts 40 thousand ton steel,

the quantity is six to eight times as that of 5CrW2Si, free of burr

All four edges can be used

12Some dimensions of the blades

... ...	950×190×50	4200×220×65
75×110×56	1000×170×50	5190×170×100
108×108×25	1050×193.33×70	... ...
130×167×35	1010×120×40	Φ230×122×40
227.4×132×40	1225×180×50	Φ440×Φ200×60
259.32×130×40	1700×250×80	Φ1000×Φ600×70
327.82×135×45	1905×150×50	Φ1015×Φ660×80
600×120×40	2200×170×70	Φ1200×Φ660×80
790×150×50	3200×165×80	Φ1300×Φ815×80
815×150×50	4000×150×100	... ...