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 are the effects of stiffeners on castings, or on welded parts (for 2 tons or less), casting or weldments on stiffeners?
Please consider the following points:1, batch: if the product batch is very large, casting will certainly have advantages, cost sharing will be very low. If less, it is recommended to use weldments.2. Reinforcement structure: if the structure is relatively simple, it is recommended to use welded parts, complex, preferably casting.
Q:What is the ejection angle of the die casting (Tan Gang)?
Because after the wax, wax parts will have a slight contraction, which is good for demoulding. Many moulds don't do the ejection angleEspecially deep hole, and customers to discuss, generally take 0.3-1 degrees is enough
Q:What are the casting parts tested?
The surface brightness, appearance, size, chemical composition, weight, material, surface defects, internal defects, seals need to be checked, leakage, etc.
Q:Casting parts in rocker arm drilling, reaming, roughness, block.
Not processed, do not understand your problem... There's something wrong with the drilling machine. Please call me
Q:What kind of flaw detector is better for casting parts?
If you want to detect internal defects, you can use ultrasonic flaw detector, ray flaw detector can also, but the ray of the safety protection level is too high, not recommended priorityMacro Xu flaw detector answered, such as the magnetic particle inspection machine has the demand can contact us, Baidu "macro Xu flaw detection""
Q:Casting parts have poor surface finish. What sand is used to make them?
Manual coal dust, clay sand is a little worse. Mechanical styling is not bad either.
Q:Where is the difference in performance between the rolled and cast parts of the same part?
Service performance: heat conductivity, friction reduction, shock absorption, heat resistance and corrosion resistanceTo compare these properties, it depends on the specific material, structure, and use of the parts. Otherwise, there is no comparisonS
Q:Why do casting parts have air holes?
There are many reasons for casting porosity, mainly due to:1. smelting process is unreasonable, metal liquid absorbs more gas;2. the gas in the mold invades the metal liquid;3. from the mold is more water brush, core dry;4. the casting has poor ventilation;5. ladle tools are not dry.Wait。
Q:How can the casting be quenched and tempered?
Cast steel annealing or normalizing parts in strength and toughness is insufficient, can be used in quenching and tempering treatment. It is mainly used for gear, gear and other parts of the cast steel. The conditioning has two kinds: one kind is cast directly after quenching and tempering, with warm water (40---50 degrees) intermittent cooling, suitable for ZG270---500, ZG310----570 and other castings.
Q:How to calculate the price of casting parts?
Cost of raw materials + electricity (fuel) costs + workers' wages + managers' wages + transport costs + raw materials burned + accessories costs + equipment maintenance depreciation costs + management fees + tax. The most convenient, the raw material market price plus 2000 yuan, plus you want profits on the line.

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