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:How do casting parts remove stress?: Annealing treatment, according to different casting annealing treatment, eliminate thermal stress, if need to restore hardness or increase hardness, and then quenching treatment

Q:Shandong foundry, casting small pieces of precision casting: Dongying Huayang precision casting factory, the smallest to do 2G pieces.

Q:What kind of casting process is used for cast iron parts? And what are the cast steel parts adopted?: Corundum sand: the main mineral composition is corundum alpha -Al2O3, used for investment casting, ceramic mold casting shell materials. The olivine sand: the main mineral composition of olivine (MgFe) 2SiO4, used in cast iron, non-ferrous alloy castings and high manganese steel casting molding sand and the core sand. Silica resources in nature resources, but suitable for casting with high SiO2 content of natural silica sand is not too much. Since 1951, China has carried out a general survey of the casting sand resources in the territory, but mainly limited to the main traffic lines and major industrial cities. Survey results show that Chinese can be used for natural silica sand casting is very rich in resources, a wide range of distribution. Inner Mongolia Zhelimumeng, natural silica sand reserves amounted to hundreds of millions of tons, the particle shape close to the circular, the content of SiO2 is about 90%. Fujian, Jinjiang Dongshan sea sand, the content of SiO2 is 94 to 98%, with a low volume of mud, are good natural silica sand. Are Duchang, Yongxiu Jiangxi County Xingzi, a large number of Quaternary lacustrine deposition of silica sand, the content of SiO2 is about 90%, low iron content, alkaline oxide less, uniform size, is a good lake sand. Guangzhou, Hunan and other places have abundant easily broken weathered sandstone, processing artificial silica sand, the content of SiO2 in more than 96%, can be used for the production of steel castings. Jiangsu Nanjing red sand, sandy mud pure, moderate, strong permeability, good viscosity, high silica content, less water, fine particles, pulls out the casting is smooth, stable quality, can be made of cast iron and non-ferrous metal parts of the sand and core sand

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！！！: 1, qualified enterprises will directly iron ore into molten iron, and then poured into the mold, such a good product performance. I work in the cast iron industry, which I can tell you for sure.2, this, like the Great Wall Motor Company has its own parts production department, as well as the corresponding mold center, so it will be their own casting. If the manufacturer does not have these departments, they can only place orders for others to do.

Q:How to cast iron and wrought iron collocation: 3, if you have a file in the hand, can be used to file to see finish can also make a judgment from the file down the iron can also be seen, but this is beyond your request, it can be done in the factory. 4, if placed in the grinder grinding, see iron spark from a judge or iron wrought iron, but this is only to do in the factory. About it, may not be full, but through these methods, generally can distinguish between iron or wrought iron.

Q:How to get rid of casting sand inside casting parts?: Are you saying that in the sand casting cavity? We use the manual blast, he is like a pipe will be automatic shot out of the grit, into the casting cavity, to remove the internal cavity in the purpose of casting sand!

Q:How much is the amount of electrophoretic paint per square meter used in the casting?: In general, when the final thickness of 15-20 microns, cathode electrophoresis paint can be coated per kilogram of 6-8 square meters, the current general cathode electrophoresis paint for the price of 22 yuan / kg, so the cathodic electrophoresis electrophoresis paint cost at 4 yuan / square meters.

Q:Cause of choking of casting parts: The reason is not in the coated sand, see coating gas evolution, the best use of zircon powder coating (low gas evolution), there is a mold according to a vent needle, this depends on your way is flat or vertical pouring pouring pouring, if vertical pouring, venting pin on the die, and the big piece how could the plane, pouring water flat, a breath, a taboo ah!

Q:The difference between sheet metal and casting parts: Commonly used in machine tools casting material is gray cast iron, casting bearing alloys can also be.

Q:What is the reason for 304 stainless steel precision casting parts to be changed?: Steel deformation control is one of the most common problems in the metal processing industry. Any process will occur. The casting is the largest deformation and the least fine. It is generally used to produce blank blanks

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