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1. APPLICATION:

Tungsten carbide roll ring is applied to high-speed wire rod mill.

2. Product series

2.1. Flat roll series

2.2 Grooved roll series

2.3. Ragged roll series

3. Product feature

3.1. Advanced processes

3.2. Stable mechanical property

3.3. High resistance to impact, hot crack and corrosion

4. Process

4.1. World-class-advanced paraffin process and spray drying grain-making process (see. Picture 1), by

which property of grain can be ensured.

4.2. 500-ton alpha press imported form USA.

4.3. Hot isostatic press.

4.4. L-HIR low-voltage sintering furnace, which was newly imported so as to highly improve internal

structure of raw material of roll ring.

4.5. D403 grinding machine specially used for roll ring (see. Picture 5) as well as finisher specially used

for grooving and shaping from Germany can ensure the dimension precision of finish-grinding of roll

ring.

5.Series and Application

Note：A: pure Co base

●: first selection

○: secondary selection

○: supporting roll

6.Series and Technical Data

Series	Chemical composition		Density g/cm³	WC grain μm	Hardness HRA	Bending strength N/mm²	Compression strength KN/mm²	Elastic modulus KN/mm²	Hammer impact J	Poisson’s ratio	Resistivity μΩ.cm	Thermal Conductivity W/(m.k)	Average coefficient of heat expansion 10-6/k
Series	WC	Co Ni	Density g/cm³	WC grain μm	Hardness HRA	Bending strength N/mm²	Compression strength KN/mm²	Elastic modulus KN/mm²	Hammer impact J	Poisson’s ratio	Resistivity μΩ.cm	Thermal Conductivity W/(m.k)	Average coefficient of heat expansion 10-6/k
ZY27	70	30	12.7	2 ~4	≥81.0	≥2300	≥3.0	420	3.0	0.26	16	60	5.8~7.0
ZY28	75	25	13.15	2 ~4	≥82.0	≥2300	≥3.1	430	2.8	0.25	16	60	5.5~6.5
ZY29	78	22	13.35	2 ~4	≥82.5	≥2300	≥3.1	440	2.6	0.24	16	70	5.5~6.5
ZY30	80	20	13.5	2 ~4	≥83.5	≥2450	≥3.3	450	2.4	0.24	16	70	5.2~6.0
ZY30A	80	20	13.5	2 ~4	≥84.0	≥2450	≥3.5	480	2.4	0.24	16	70	5.2~6.0
ZY31	82	18	13.6	2 ~4	≥83.5	≥2450	≥3.6	450	2.2	0.23	17	96	5.0~5.8
ZY31A	82	18	13.6	2 ~4	≥84.0	≥2450	≥3.7	480	2.2	0.23	17	90	5.0~5.8
ZY32	85	15	13.95	2 ~4	≥84.5	≥2500	≥3.8	500	2.0	0.23	17	100	5.0~5.8
ZY32A	85	15	13.95	2 ~4	≥85.5	≥2500	≥4.0	530	2.0	0.23	17	100	5.0~5.8
ZY33	85	15	13.95	2 ~4	≥85.0	≥2500	≥3.8	530	2.0	0.22	17	100	5.0~5.8
ZY34A	87	13	14.10	2 ~4	≥86.0	≥2400	≥3.8	550	1.8	0.22	17	100	4.8~5.6
ZY35A	90	10	14.35	2 ~4	≥87.0	≥2300	≥4.0	550	1.6	0.21	17	100	4.8~5.6
ZY36A	94	6	14.95	2 ~4	≥88.0	≥2100	≥4.2	600	1.6	0.21	17	100	4.5~5.4

TUNGSTEN CARBIDE RING

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