Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd
Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd 18 Years focus on development and production of grinding media Casting quality with strength, Forging glory with integrity
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New Products 20-150mm High Hardness Hot Rolling Steel Ball for Ball Mill Machine Factory
Hot-rolled steel balls are high-quality grinding balls manufactured
Size: 20-150mm
Origin: Shandong, China
| Material | Chemical Elements | |||||
| C | Si | Mn | P/S | Cr | Hardness (HRC) | |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | <0.035 | <0.25 | 60-65 |
| 60MN | 0.55-0.65 | 0.17-0.37 | 0.7-1.0 | <0.04 | <0.25 | 58-63 |
| B2 | 0.72-0.85 | 0.17-0.37 | 0.7-1.0 | <0.04 | 0.4-0.6 | 55-58 |
| B3 | 0.58-0.66 | 1.3-1.9 | 0.65-0.8 | <0.025 | 0.7-0.9 | 56-65 |
| B6 | 0.97-1.03 | 0.2-0.3 | 1.0-1.1 | <0.025 | 0.5-0.6 | 61-65 |
Hardness
|
Material
|
25mm-50mm HRC |
60mm-90mm HRC |
100mm-125mm HRC
| 130-150mm HRC | ||||
| Surface | Core | Surface | Core | Surface | Core | Surface | Core | |
| C45 | 55-58 | 55-58 | 50-68 | 23-30 | 48-52 | 22-26 | 48-52 | 22-25 |
| 60Mn | 58-62 | 55-60 | 58-62 | 30-36 | 57-61 | 26-32 | 57-61 | 26-30 |
| B2 | 60-64 | 58-64 | 57-64 | 45-60 | 55-60 | 38-48 | 55-60 | 38-42 |
| B3 | 62-65 | 60-65 | 60-65 | 58-65 | 56-65 | 50-62 | 56-63 | 50-55 |
| B6 | 62-65 | 60-65 | 61-65 | 58-65 | 60-63 | 50-62 | 61-63 | 50-55 |
Strict quality control of steel material from LAIWU STEEL FACTORY GROUP, the Biggest
factory group in North of China.
1.Traditional Hammer Forging:
Raw material-Cutting-Heating-Forging-Quenching-Tempering-Testing-Packing
2. Hot Rolling
Quality control for each production shift (4hours/Shift);
Hardness, chemical elements and impact testing after production for each production shift;
SGS –third party testing before each delivery
The steel ball quality inspection process mainly includes the following steps: Appearance quality inspection: First, check the surface quality of the steel ball to observe whether there are obvious defects such as cracks, depressions, bubbles, etc. These defects will affect the performance and life of the steel ball.
Size and weight detection: Use precise measuring instruments such as calipers and micrometers to measure the diameter, roundness, weight and other indicators of the steel ball and compare them with the standard values. If there is a large deviation, it means that there is a problem with the size and weight of the steel ball.
Hardness test: Use a hardness tester to measure the hardness value of the steel ball to determine whether it meets the standard requirements. The hardness value is related to factors such as chemical composition and heat treatment process.
Chemical composition analysis: Use modern equipment such as inductively coupled plasma optical emission spectrometer (ICP-OES) to analyze the chemical composition of the steel ball to ensure that its composition meets the prescribed chemical composition standards.
Metallurgical structure analysis: Use optical microscopes and other equipment to observe the metallographic structure of the steel ball, evaluate its organizational morphology, grain size, phase distribution, etc., to understand its mechanical properties and wear resistance.
Physical property test: Including tensile and bending tests to evaluate whether the physical properties of the steel ball meet the requirements. These test results are related to the wear resistance, mechanical properties and vibration characteristics of the steel ball.
Wear resistance test: Test the wear resistance of the steel ball under actual use conditions to ensure its performance in long-term use.
Fatigue test: Evaluate the service life of the steel ball under repeated stress conditions to ensure its stability under high load.
Container bags(Net weight:1000KGS) or Steel drums(850-900KGS) or in clients' requirements
Our company is located in Zhangqiu ,Jinan City,Shandong Province, which is provided with superior geographical position and convenient transportation. Our company covers an area of 15,000 square meters,with two million registered capital .And there are 150 existing staff,including 21 technicians.
Our main products: forging grinding steel balls,and (high,low,medium) chrome alloyed casting iron balls,casting cylpebs,grinding rods.
Application of our products: various mines,cement plants,power stations and chemical industries.
Priorities of our products: High hardness, good wear resistance, breakage rate lower than 1%.