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

Ref Price:

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 to improve the surface roughness of casting parts?: One is to improve the accuracy of the model; the two is to improve the molding sand mesh. How much is the other relationship?.

Q: What is normalizing, annealing, tempering, quenching? What is the difference between forging parts and casting parts?: The aim is to make the grain fine and distribute the carbide evenly. The difference between normalizing and annealing is that normalizing cooling rate is slightly faster than annealing cooling rate, so normalizing structure is finer than annealing structure, and its mechanical properties are also improved. In addition, normalizing furnace cooling does not occupy equipment and has higher productivity. Therefore, normalizing may be used instead of annealing as much as possible. The main application areas of normalizing are as follows: for low carbon steel, after normalizing, the hardness is slightly higher than that of annealing, and the toughness is better. It can be used as the pretreatment of cutting. Used for medium carbon steel, instead of quenching and tempering, as the final heat treatment, or as an induction heating method before surface hardening. Used for tool steel, bearing steel, carburizing steel, etc., it can eliminate or restrain the formation of network carbide, so as to obtain the good organization of spheroidizing annealing. For cast steel, the microstructure can be refined and the machinability can be improved. Used for large forgings, which can be used as final heat treatment, so as to avoid larger cracking tendency during quenching.

Q: The casting defects of pores, trachoma how to repair?: Metal repair can be used to fill the repair. Airhole 2mm following LT102 recommend the use of liquid metal repairing agent.

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.

Q: In theory, which is more expensive, forging parts or casting parts?: It depends on the structure. In theory, the shape of the forging is relatively simple, but the requirement of internal structure is relatively high

Q: What's the density of the cast iron? The density is thin and the density is thin: Generally cast iron thick place, density is empty, thin place density a little more.

Q: Does anyone know how to make precise casting parts for aerospace or manufacturers of single and small quantities of automotive parts and components, mainly in Beijing, Tianjin and Tangshan?: List of China's military enterprises list of ten major military groupsChina Nuclear Industry Construction Group CorporationChina Aerospace Science and Technology CorporationChina Aerospace Science and Engineering CorporationChina Aviation Industry CorporationChina Aviation Industry Corporation IiChina State Shipbuilding CorporationcsicChina North Industries Group CorporationChina South Industries Group CorporationChina National Nuclear CorporationKey military enterprisesShipbuilding industry:China State Shipbuilding Corporation (South ship group), (China Shipping Group)China Shipbuilding Industry Corp (North Ship group), (China Shipbuilding Industry)Guangzhou Shipyard International Limited by Share Ltd (GSI)Jiangnan Heavy Industry Limited by Share Ltd (Jiangnan Heavy Industry)Nuclear industry:China National Nuclear Corporation (CNNC)China Nuclear Industry Construction Group Corporation

Q: What are the general technical requirements for casting parts?: No matter what kind of material casting, there are the following major requirements:Material requirements. Mainly hardness, tensile strength, elongation, impact toughness.Two, dimensional accuracy and shape accuracy. Different castings have different requirements. Different sizes and geometric tolerances and different tolerances are adopted.Three, according to the use requirements, the casting of other defects, acceptance requirements. Such as holes, sand holes, shrinkage, slag, sand, crack.........Four. Requirements for defect repair.

Q: When the blank is a casting, the margin is evenly distributed, how should rough machining?Please help friends from mechanical classes.There is another problem: in the NC milling plane contour machining, when the rough margin is large, how to deal with.Who can help in time, add 20 reward. Urgently!!: Personal advice:Because of the large margin, your outline is easy to guarantee;So the key is to consider the assembly and aesthetics of the casting. You have to find the machining criteria;Rough the datum so that it can be machined;After the outline, turn back to the finishing line.If the casting requirement is not high, the benchmark can be directly processed; (not recommended)Over

Q: In the design of casting steps and precautions, for casting design, we have what experience?.: A: 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.

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