Forged Grinding Ball 20mm to 150mm Size

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Product Description:

Specifications of 20mm to 150mm Forged Grinding Ball:


higher hardness,
great toughness,

more dense tissue abrasion lower

Breakage rate is less than or equal to 1%

Chemical Composition of 20mm to 150mm Forged Grinding Ball:

e material

Chemical composition

Diameter of 100 ball hardness (HRC)

C

Si

Mn

S

P

Cr

Ni

Mo

surface

core

45#steel

0.42-0.50

0.17-0.37

0.50-0.80

≤0.04

≤0.04

≤0.25

≤0.25

52-57

20-30

B2

0.65-0.78

0.17-0.37

0.70-1.20

≤0.035

≤0.035

0.55-0.60

55-60

35-40

50Mn

0.48-0.56

0.17-0.37

0.70-1.00

≤0.04

≤0.04

≤0.25

≤0.25

55-60

25-35

60Mn

0.57-0.65

0.17-0.37

0.70-1.00

≤0.04

≤0.04

≤0.25

≤0.25

55-60

25-35

65Mn

0.62-0.70

0.17-0.37

0.90-1.20

≤0.04

≤0.04

≤0.25

≤0.25

55-60

25-35

40Cr

0.37-0.45

0.20-0.40

0.50-0.80

≤0.035

≤0.035

0.80-1.10

55-60

25-35

B3

0.60-0.65

0.17-0.40

0.70-1.00

≤0.035

≤0.035

0.70-1.20

55-60

52-57

B6

0.77-0.85

0.17-0.37

0.70-1.00

≤0.035

≤0.035

0.88-0.98

55-60

55-60

42CrMo

0.38-0.45

0.20-0.40

0.50-0.80

≤0.035

≤0.035

0.90-1.20

0.15-0.25

55-60

25-35

Specification of 20mm to 150mm Forged Grinding Ball:

1. Diameter: 20mm-150mm
2. Grade: 22Cr, 17Cr, 15Cr, 11Cr, 5Cr, 1.5Cr, etc
3. Chemical composition: C, Si, Mn, Cr, P, S, Mo, Cu, Ni, etc
4. Surface treatment: burnt sand & smooth.
5. It is free from hard spot, visible injurious defects such as blow hole,porosity, shrinkage, cracks, cold-shuts.

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Q:What's the density of casting?
Generally cast iron thick place, density is empty, thin place density a little more.
Q:What's the effect of casting copper?
Copper is one of the main corrosion resistant alloys. When the mass fraction of copper in cast iron is from 0.25% to 1%, the corrosion resistance of copper in the industrial atmosphere can be obviously increased. But copper has very little corrosion resistance in lye or salt solution.Copper can increase the flowability of molten iron and improve its casting ability remarkably.Copper can increase the coercive force and residual magnetic force, but the permeability is not affected.Combined use of copper with other alloy elements, such as copper chromium, copper chromium molybdenum, copper molybdenum, copper manganese, copper vanadium, can achieve greater results.
Q:Stainless steel mirror polishing precision casting parts is very difficult, 20
Buffing should be better, to see how your embryo, but a bit difficult
Q:How to collect exothermic process of casting blank?
Casting, do not need to provide a rough casting foundry drawings, according to your chart will put foot margin in the processing needs of the surface, the rest of the size can be found according to the mechanical design manual and manual casting. General Casting Factory Casting Division will be in your chart marked on shrinkage and processing margin figure (usually with red and green pen) to the patternmaker production of wood or other material mould diagram.
Q:How much is the casting allowance in the design of the casting machine and the drawing?
Casting parts do not need to provide drawings of casting blank, the casting factory according to your drawings in the required surface will be sufficient allowance, and the rest of the size according to the mechanical design manual and the casting manual can be found.
Q:When there is no flaw detection for large casting parts, is there any crack inside?
Cracks are considered serious levels of defects and should be repaired
Q:Shandong foundry, casting small pieces of precision casting
Small foundry in Shandong too much, like many of us in Qingdao, then Dongying Changshun investment casting is a home, they are also casting precision casting equipment, specifically what I recommend that local enterprises, far is not convenient,
Q:What is the ejection angle of the die casting (Tan Gang)?
Especially deep hole, and customers to discuss, generally take 0.3-1 degrees is enough
Q:How can the casting be free of trachoma?
2, pouring temperature should be enough, otherwise the sand can not float up;
Q:Is the cast steel a casting part?
Cast steel is one of the casting parts that you call. The material is made of carbon steel or alloy steel, stainless steel, etc. the method is cast

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