Low Chromium Alloy

Model：Low chromium alloy grinding ball
Weight：0.11~8.74kg
Surface hardness：≥45 HRC
Application range：It is widely used in powder preparation and superfine deep processing of industries, such as building materials, mine, chemical engineering, ceramic material, papermaking, magnetic materials.

Product details

Low Chromium Alloy Grinding Ball

Introduction

Low chromium alloy grinding ball is widely used in powder preparation and superfine deep processing of industries, such as building materials, mine, chemical engineering, ceramic material, paper-making, magnetic materials. Its surface hardness can up to more than 45HRC, hardness gradient is evenly distributed. It has good toughness and breaking resistance is 5 times than ordinary grinding ball. There is no deformation. It increases recovery rate of concentrate and production capacity of mill, prolongs the service life of liner plate of the mill, and reduces the cost of production.

Production Technology

Medium frequency furnace smelts high quality steel scrap, chromium alloy and other alloy materials first, after micro alloying processing is castmolding with steel model.

Constant temperature pouring ensures there is no sand inclusion, stoma, collapse and other quality defects.

Heat treatment oil quenching process, quenching and tempering will change internal structure of the ball, reduce the internal stress of sphere, ensure breaking

rate to further improve the performance after quenching.

Semi-finished product and finished product adopt advanced spectrum detection to ensure the stability of chemical composition and performance.

Chemical composition

Name	chemical composition（%）
Name	C	Si	Mn	Cr	Mo	Cu	P	S
Low chromium alloy grinding ball	2.2-2.5	≤1.2	0.5-1	0.8-1.8	0.6-1	≤1	≤0.05	≤0.05

Mechanical properties and metallographic structure

Name

Surface hardness

（HRC）

Impact value

（J/cm2）

metallographic structure

Falling ball impact fatigue service life

Low chromium alloy grinding ball

≥45

≥2.5

P+C

≥10000

P- pearlite C- carbide

Specification

specification（mm）	unit weight（kg）	quantity（pc/t）	specification（mm）	Unit weight（kg）	quantity（pc/t）
Φ30	0.11	9091	Φ90	2.90	345
Φ40	0.25	3891	Φ100	4.00	250
Φ50	0.50	2000	Φ110	5.30	188
Φ60	0.86	1153	Φ120	6.80	147
Φ70	1.37	729	Φ130	7.70	129
Φ80	2.05	487	Φ140	8.74	114

Contact us:

	Serena Fu	Kira Zhang	Teresa Zheng
E-mail	serena.fu@hot-mining.com	kira.zhang@hot-mining.com	teresa.zheng@hot-mining.com
Skype	Serena20140924	kira.zhangjing	teresa.zheng123
Whatsapp	+86 151 0833 3341	+86 152 8105 1932	+86 152 8162 6323