40mm to 110mm High Chromium Grinding Ball with High Hardness and Low Breakage Rate

40mm to 110mm High Chromium Grinding Ball with High Hardness and Low Breakage Rate System 1

40mm to 110mm High Chromium Grinding Ball with High Hardness and Low Breakage Rate System 2

40mm to 110mm High Chromium Grinding Ball with High Hardness and Low Breakage Rate System 3

40mm to 110mm High Chromium Grinding Ball with High Hardness and Low Breakage Rate

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Loading Port:: Qingdao

Payment Terms:: TT or LC

Min Order Qty:: 25M.T. m.t.

Supply Capability:: 200000M.T./Year m.t./month

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1. Chemical Composition of 40mm to 110mm High Chromium Grinding Ball with High Hardness and Low Breakage Rate

Product	Brand	Chemical composition(%)
		C	Si	Mn	Cr	Mo	Cu	Ni	P	S
Special high chrome casting iron ball	Cr26	2.0-3.3	≤1.2	0.3-1.5	>23.0-30.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
Special high chrome casting iron ball	Cr20	2.0-3.3	≤1.2	0.3-1.5	>18.0-23.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
Special high chrome casting iron ball	Cr15	2.0-3.3	≤1.2	0.3-1.5	>14.0-18.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
High chrome casting iron ball	Cr12	2.0-3.3	≤1.2	0.3-1.5	>10.0-14.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
High chrome casting iron ball	Cr8	2.1-3.3	≤2.2	0.3-1.5	7.0-10.0	0-1.0	0-0.8	-	≤0.10	≤0.06
Middle chrome casting iron ball	Cr5	2.1-3.3	≤1.5	0.3-1.5	4.0-6.0	0-1.0	0-0.8	-	≤0.10	≤0.10
Low chrome casting iron ball	Cr2	2.1-3.6	≤1.5	0.3-1.5	1.0-3.0	0-1.0	0-0.8	-	≤0.10	≤0.10
Casting ball	QTB	3.2-3.8	2.0-3.5	2.0-3.0	-	-	-	-	≤0.10	≤0.03
Casting ball	QTM	3.2-3.8	2.0-3.5	2.0-3.0	-	-	-	-	≤0.10	≤0.03

2. Index analysis of 40mm to 110mm High Chromium Grinding Ball with High Hardness and Low Breakage Rate

Product	Brand	DIA	hardness	Breakage ratio of ball	Impact fatigue life of ball	Numbers time	Metallographic organization
Special high chrome casting iron ball	Cr26	15-150MM	≥58	0.5%	6	15000	M+C
Special high chrome casting iron ball	Cr20	15-150MM	≥58	0.5%	6	15000	M+C
Special high chrome casting iron ball	Cr15	15-150MM	≥58	0.5%	5	15000	M+C
High chrome casting iron ball	Cr12	15-150MM	≥58	0.5%	4	15000	M+C
High chrome casting iron ball	Cr8	15-150MM	≥58	0.5%	3	15000	M+C
Middle chrome casting iron ball	Cr5	15-150MM	≥47	0.5%	2	12000	P+C
Low chrome casting iron ball	Cr2	15-150MM	≥45	0.5%	1	12000	P+C
Casting ball	QTB	15-150MM	≥50	0.5%	-	12000	-
Casting ball	QTM	15-150MM	≥52	0.5%	-	12000	-

3. Feature of 40mm to 110mm High Chromium Grinding Ball with High Hardness and Low Breakage Rate

1) In general, grinding steel ball has high hardness: surface hardness to 58-65 HRC, volume hardness of 56-65 HRC

2) impact toughness high: impact toughness more than 12 J / cm2.

3) broken rate is low: the actual broken rate is not higher than 0.5%.

4) loss of grinding forged steel ball round rate is low.

Q:Explain the heat treatment effect of casting parts, forging parts and welding parts: Good welding of low carbon steel (alloy), probably because the weld workpiece rigidity, fast cooling, the weld internal crystallization of brittle microstructure (martensite), so after welding or welding process welding using self heat, reasonable arrangement of weld, welding seam and heat affected zone heat treatment. The welding heat treatment is often used to preheat before welding, after welding withasbestos cloth covering slow cooling annealing, reach the purpose, its main function is to reduce the internal stress, improve the weld microstructure of martensite formation, reduce brittle tendency, preventing welding cracks.

Q:My parts complex, machining costs are relatively high, so want to cast, but the surface needs anodizing, what material will be better?: The common material that can be anodized is aluminum alloy. It is recommended to use casting aluminum alloys, such as ZL102 and ZL105, which are commonly used as cast aluminium alloys. The processing of aluminum casting is easy. After processing, the surface of the whole part can be anodized. The color can be chosen.

Q:Is 316 casting better than 304 casting?: The degree of difficulty in the process of casting depends mainly on the structure, precision requirements, and hardness of the casting. It is comprehensive. There is no simple comparison of the material to determine the degree of difficulty in processing

Q:Can the casting part be phosphating with the phosphating solution of the pickling board?: Like stainless steel casting, duplex stainless steel casting is phosphating, ductile iron gray iron is not required

Q:In the design of casting steps and precautions, for casting design, we have what experience?.: (3) to prevent generating white grey cast iron, in addition to taking measures from the process, must make the wall thickness is not too thin (some sources indicate that the corner wall thickness above 15mm, metal type casting must be in the corner, for Aluminum Alloy, magnesium alloy casting casting casting Create fillet should not be less than 3-4m, for casting round cast iron, copper alloy mould casting can see table 1.1-32 selection; (5) because of the metal and the core without let, for the convenience of the casting is taken out and the draw out type, slope casting casting should be suitably large than sand casting metal casting. General 30%-50%, it should be pointed out that in addition to the height of the slope of casting size and alloy type, wall, is also related to the casting surface position, where the cooling and contraction and metal surface of casting surface can be designed from the tendency of small inclination, while casting shrinkage tend to be pressed on the surface of metal castings the type should be given greater inclination, all kinds of metal type alloy casting casting casting.

Q:Casting parts need to be subjected to the kind of heat treatment after the weldment is finished: 1, gray cast iron: General graphite annealing, to be heat treatment annealing, surface hardening etc.; ductile iron can be various: annealing, normalizing, quenching and isothermal quenching, surface treatment, chemical heat treatment.2. Pouring liquid metal into the casting cavity which adapts to the shape of parts. After cooling and solidification, the casting method is called casting. Castings obtained by casting are called castings. Casting structure design: ensure the working performance and mechanical performance requirements, consider the technical requirements and performance of alloy casting casting casting structure, casting structure design is reasonable or not, the casting quality, productivity and cost has a great influence.3. Heat treatment is a metal hot working process in which the material is in solid state by means of heating, heat preservation and cooling to obtain desired microstructure and properties

Q:Domestic large steel castings factory which is better, recommend!: Do the casting manufacturer of large steel castings, Hunan Jinsha heavy industry science and technology limited company, heard that their professional only more than 1 tons of steel castings, anyway, 150T just big, the company won a lot of foundry industry patents should be good.

Q:Casting parts have poor surface finish. What sand is used to make them?: Now resin sand, coated sand and other processes are also very good surface.

Q:The difference between sheet metal and casting parts: Sheet metal refers to the metal sheet (which can be bent straight board, etc.) generally uniform thickness, can obtain the required parts by stamping, molding, welding, splicing and other processing methods.

Q:Selection of hydraulic press is the casting parts and steel plate welding, how to choose?: Casting parts in one shape, the overall processing in this regard than steel plate welding better. The same price is much more expensive than steel. Large hydraulic presses seldom have casting parts.

CMD is one of the largest manufacturers and professional exporters of forged grinding balls and cast grinding balls in China, with an annual output of 50,000 tons. Now, there are 180 employees in our company, with an area of 20,000 square meters. Our products are mainly exported to more than 20 countries in the world, such as Africa, South America, Asia, and Australia.

1. Manufacturer Overview
Location	Shandong, China
Year Established	1983
Annual Output Value	Above US$100 Million
Main Markets	South Asia, South Asia, Central America, Western Europe, Eastern Asia, Mid East, Oceania, Africa
Company Certifications	ISO9001;IS014001 Certificate

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port	Qingdao Port
Export Percentage
No.of Employees in Trade Department	3-5 People
Language Spoken:	English；Chinese；Japanese；Korean
b)Factory Information
Factory Size:	Above 20,000 square meters
No. of Production Lines	8
Contract Manufacturing	Grinding steel balls;Grinding steel cylpebs;Grinding media;Grinding meida ball
Product Price Range	Average