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: Casting parts need to be subjected to the kind of heat treatment after the weldment is finished: This is difficult to say, the key is to see the specific parts and components, the final mechanical performance requirements.For example, gray cast iron, usually graphite annealing, to heat treatment annealing, surface quenching and so on, ductile iron can be a variety of annealing, normalizing, quenching and isothermal quenching, surface treatment, chemical treatment and so on, in a word, heat treatment of steel can usually, nodular cast iron can do. Malleable cast iron and vermicular cast iron are often subjected to graphitization annealing and stress relieving annealing, while wear-resistant cast irons often undergo quenching + low temperature tempering, and so on.Welding is the case, such as bearing steel welding must be quenched + low temperature tempering, machine spindle welding (repair welding) must be quenched and tempered treatment, and so on. Of course, if it is a general weld, there is no need for heat treatment or, at most, stress relieving annealing.

Q: It is generally said that cast iron is re smelted by pig iron. My question is..:1 pig iron for melting iron, is directly cast into products (such as bed cover, etc.); or that is just the first pig iron smelting iron casting, such as to cover, bed and other products, will once again cast iron melt to casting?2, there are many castings to the engine. Are these castings made by the engine manufacturer themselves or bought by others?There is no need to answer all. Thank you！！！: The molten iron (molten iron, scrap steel, scrap casting, iron alloy) is melted into cast iron by means of an electric furnace or cupola, and is poured into a casting.

Q: What should I pay attention to when designing a casting structure?: (2) in the prevention of metal mold casting misrun and cold partition should pay attention to the following problems: the structure of A casting thickness should be appropriate not too thin, especially when casting size when not too thin; the B should avoid a big level, because it makes the liquid metal in the casting. Rise slowly, and the air contact surface, easy oxidation, and because the metal type liquid metal heat quickly, quickly lose liquidity, easy to cause misrun and cold lap, slag and other defects; C casting shape should be streamlined to avoid sharp corners and has sharp change connection structure in order to facilitate the flow of liquid metal. 2 in the design of metal castings in a complex shape, if the production process is very difficult, should not affect the casting conditions, try to make the casting has simple shape, strong structure change, removed from metallic die for.

Q: Question, such as title, I hope I don't copy the definition of rolling and casting in Baidu encyclopedia, thank you: uch as: automobile transmission shaft adopts mechanical rolling machine with good performance, gray cast iron can play seismic effect effectively, with good thermal conductivity of radiator graphite in gray cast iron, the aircraft engine turbine blade by casting directional solidification casting and Dan Jingzhu.Do everything we can to make the best use of it, the advantages and disadvantages of rolling and casting, and you'll find it yourself, Baidu, depending on how you use it

Q: How can the casting be quenched and tempered?: Return, general castings (especially steel castings) commonly used heat treatment process is normalized and tempered. Of course there are completely by annealing or remove stress annealing...

Q: We are small castings, the need for surface treatment of shot blasting machine, about how much?: The choice of shot blasting machine, this is according to the workpiece size, yield, whether can collision, and the working time and other factors considered, while the price of different blasting machine are not the same, but the vast majority of small castings used crawler shot blasting machine, according to the comprehensive consideration of factors such as yield, size of workpiece commonly used on the market the crawler shot blasting machine has Q324, Q326, Q328, Q3210, and each time the amount of their treatment were 125KG, 200KG, 400KG, 600KG, the specific use of what types also need to be determined according to the actual situation

Q: What kind of flaw detector is better for casting parts?: If the casting is very small, can be used for fixed magnetic detection machines, of course with fixed magnetic powder the testing machine, the best first contact the manufacturers, because the fixed magnetic particle testing machine belongs to the non-standard equipment, according to the workpiece size, different shape, manufacturing daily inspection and measurement.

Q: Heat treatment process and purpose of casting parts: Objective: to stabilize tissues, eliminate or substantially reduce internal stress.

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.

Q: What's the cause of the choking of the casting?,: Causes of choking fire:1., casting material in the pouring of gas;

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