Grinding Cylpebs with Different Size Use for Mine and Power Station

• Customization: Available
• Material: Chrome
• Content: 10-28%
• Model NO.: Grinding cylpebs
• Usage: Construction, Machinery, Chemical, Petroleum, Grind
• Color: Black
• Customized: Customized
• Heat Treatment: Oil Quenching
• Broken Rate: <0.5%
• Hardness: 58-68HRC
• Delivery Time: 15-30 Days
• Transport Package: Durm or Bag
• Trademark: chengda
• Origin: China
• HS Code: 7325910000
• Production Capacity: 60000 Tons

Product Description

Forged steel is a wear-resistant material, its chemical composition is similar to the grinding ball, forged steel is divided into double plane and double spherical (capsule type). Wear-resistant cast steel forging using high-quality scrap steel and alloy elements, through precision casting or forging process, to ensure dense internal organization, no defects, improve the overall strength and toughness; Appearance more impact and crushing ability. It can withstand high frequency strong impact force and friction, with good grinding effect, high wear resistance, low crushing rate, and effectively reduce production costs.

 

Excellent wear resistance: The chemical composition of the high chromium alloy wear layer has a high carbon content, and the chromium content is as high as about 30%, the volume fraction of Cr7C3 carbide in the metallographic structure reaches more than 50%, and the macroscopic surface hardness is HRC56~62, which makes its wear resistance significantly improved.

Good impact resistance: the substrate is low carbon steel or low alloy steel and other ductile materials, wear-resistant layer combined with the substrate, showing good impact resistance, suitable for bearing high drop hopper and other impact and wear material handling system.

Good corrosion resistance: Because the alloy layer contains a high percentage of chromium metal, it has a certain rust and corrosion resistance, which is suitable for the occasions of easy adhesion materials

Designation	Chemical Compositions(%)
	C	Si	Mn	Cr	Mo	P	S
ZDCr26	2.2-3.0	≤1.0	0.3-1.0	24.0-30.0	≤1.0	≤0.10	≤0.06
ZDCr23	2.2-3.0	≤1.0	0.3-1.0	22.0-24.0	≤1.1	≤0.10	≤0.06
ZDCr20	2.2-3.0	≤1.0	0.3-1.0	18.0-22.0	≤1.0	≤0.10	≤0.06
ZDCr17	2.2-3.0	≤1.0	0.3-1.0	16.0-18.0	≤1.0	≤0.10	≤0.06
ZDCr15	2.2-3.0	≤1.0	0.3-1.0	14.0-16.0	≤1.1	≤0.10	≤0.06
ZDCr12	2.2-3.0	≤1.0	0.3-1.0	10.0-14.0	≤1.0	≤0.10	≤0.06
ZDCr8	2.2-3.2	≤1.0	0.3-1.5	7.0-10.0	≤1.0	≤0.10	≤0.06
ZDCr5	2.2-3.2	≤1.0	0.3-1.5	4.0-6.0	≤1.0	≤0.10	≤0.10
ZDCr2	2.2-3.2	≤1.0	0.3-1.5	1.3-3.5	≤1.0	≤0.10	≤0.10
ZDCADI	3.3-3.9	2.4-3.0	2.4-2.9	0.2-0.5	≤0.5	≤0.06	≤0.05

 

 

MECHANICAL PROPERTIES AND MICROSTRUCTURE

Designation	Surface HRC	Core HRC	Microstucture
ZDCr28	≥62	≥62	M+C
ZDCr26	≥62	≥62	M+C
ZDCr23	≥62	≥62	M+C
ZDCr20	≥62	≥62	M+C
ZDCr17	≥62	≥62	M+C
ZDCr15	≥62	≥62	M+C
ZDCr12	≥62	≥62	M+C
ZDCr8	50-55	50-55	P+C/M+C
ZDCr5	50-55	50-55	P+C/M+C
ZDCr2	≥48	≥47	P+C
ZDCADI	55-60	55-60	B+Fe
C-Carbide       M-Martensite      A-Ferrite      B-Bainit       Fe-Ferrite

 

 SPECIFICATION

Specification (mm)	Weight of Each Ball (Kg)	Pcs/ton
φ8×10	0.0039	255056
φ10×12	0.0074	136030
φ12×14	0.012	80970
φ14×16	0.019	52052
φ16×18	0.028	35424
φ18×20	0.04	25191
φ20×25	0.061	16324
φ25×30	0.115	8706
φ30×35	0.193	5182
φ35×40	0.3	3331
φ40×45	0.44	2267
φ45×55	0.5711	1751
φ55×60	0.8611	1161

Production equipment
 

First-class production facilities, first-class quality

The office area and production facilities of Chengda Company, with an annual capacity of more than 60,000 tons, make us a large production base of wear-resistant materials in northern China, the main products are chromium alloy wear-resistant steel ball, steel forging, lining plate and so on. Our plants are ISO 9001:2015 certified and include fully automated production lines, heat treatment lines and inspection equipment. In addition, the company has developed the ultra-high chromium grinding ball and its processing technology, the mine special high wear and high chromium alloy cast iron grinding ball and its processing technology, can strictly in accordance with ASTM, JIS, DIN, BS and other international standards to produce all kinds of wear-resistant, heat and corrosion resistant high-quality castings.

Factory  environment

Shijiazhuang Chengda Wear-resistant Materials Co., Ltd. has an annual output of 60,000 tons of various kinds of wear-resistant ball forging and 5,000 tons of high-performance wear-resistant forgings, wear-resistant hammer and mining accessories production capacity, products now have eight series, more than 100 material varieties specifications. The main products are: multi-alloy casting ball, high chromium alloy wear-resistant ball, high chromium alloy casting ball (casting and forging), low chromium alloy steel ball (casting and forging).

Certifications
Obtained "ultra high chromium grinding ball and processing technology"

Obtained "high wear resistance for mining high chromium alloy cast iron gringding balls and the processing technology"

Packaging & Shipping
 

(1) Balls can be provided in 1 ton flexible container bag with secure lifting straps. Bags can be strapped onto wooden pallets as per demand.

(2) Balls can be provided in steel drums, 850- 930KGS/DRUM. Drums can be strapped onto wooden pallets as per demand.

(3) We have long-term logistics partners to meet the different trade terms of sea or rail transport.

Company Profile

Shijiazhuang Chengda Wear resistant materials Co.,LTD. a certified ISO 9001Company, specializes in the design, development, production, and servicing of high chromium wear resistant materials for grinding equipment in cement, mining and quarry industries. 
CHENDDA manufactures High chromium cast grinding media which is wear, corrosion and impact resistant helps in efficient ball mill grinding.
Our grinding media is tailor made for each milling application. There is a wide range of alloying options which are decided after adequate test work and technical analysis. We manufacture grinding media with chrome content ranging from 1 % to 30 % in sizes ranging from 15 mm to 140 mm as required by the application
Big balls, ranging from 140 mm to 60 mm, Chrome range from 10% - 28%,Optimal Hardness ranging from 57 - 66 HRc , are essentially used in the first chamber of the mills for crushing the feed material. These balls impart potential energy for crushing and thus required to possess a combination of wear and impact resistance
Grinding by attrition is accomplished by numerous small balls of varying sizes from 15mm to 60mm,Chrome range from 10% - 30% and Optimum Hardness ranging from 60 - 69HRc in second chamber. These balls contribute significantly to the grinding efficiency of the mills. Quality control of the final product depends much on the quality of the balls used.
Our commitment is to deliver reduction in wear cost, improve equipment availability, enhance mill productivity, reduce energy cost (Carbon foot-print) and improve metal recoveries through optimization in flotation process. With a legacy of more than 20 years in China , we have set benchmarks in quality, services and innovation, establishing a strong reputation as a solution provider.
The value our products bring to the customers - doing more with less.