- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
 |
| Quantity: | |
|---|---|
Graphite molds for hot-pressed sintered diamond tools are responsible for the dual functions of heating elements and mold support in the manufacturing process of diamond tools. The quality of graphite molds directly affects the dimensional accuracy and appearance of diamond tools.
Hot pressing sintering process requirements: the temperature reaches (1 000±2) ℃, the molding pressure is 16-50 MPa, the heat preservation and pressure holding time is 15-30 min, and the environment is in a non-vacuum state. Under these working conditions, it is required that the graphite mold of the forming and heating element has electrical conductivity, high resistivity, and sufficient mechanical strength, and it also needs to have good oxidation resistance and long service life to ensure that the diamond Dimensional accuracy and excellent performance of the tool.
Artificial graphite molds have the following characteristics in pressure sintering of cemented carbide: First, if the pressing temperature is increased to 1350-1450 degrees, the required unit pressure can be reduced to 67-100 kgf/cm2 (that is, 1/10 of the cold pressing pressure); Second, pressurization and heating are carried out in the same process, and a dense sintered body can be obtained after a short period of sintering.
The graphite molds for diamond tool manufacturing produced by Sunny Graphite mainly use graphite raw materials with ultra-fine particle structure, high purity and high graphitization degree, and the parameters as follows:
Density g/cm³ | 1.85-1.9 |
Resistivity μΩ·m | ≤12 |
Compressive strength Mpa | ≥70 |
Porosity % | ≤26 |
Elasticity Modulus Gpa | 6-18 |
Thermal expansion coefficient 10-6/ºC | 1.47-4.25 |
Ash content % | ≤0.05 |
Temperature resistance ºC | ≤4350ºC |
Graphite mold produced by our company has the characteristics of small porosity, compact structure, high surface finish and strong oxidation resistance. According to specific working conditions, the average service life can reach 30-40 times.
We can customize graphite molds according to your drawing requirements, and we can also assist you in designing molds that meet production requirements based on our more than 40 years of experience. The error of the molds processed by our company is ±0.02mm. Diamond tool dies are available in the following categories:
item | product name | specification and model |
1 | graphite gasket | φ100*2 etc. |
2 | graphite boat/box | Outside φ306*96*60 inside 290*80*50 etc. |
3 | graphite grain | φ3*2.5 etc. |
4 | graphite bead mold | φ11.5*6 etc. |
5 | graphite diamond tool die | 40*3.6*10 etc. |
6 | graphite gangsaw mold | 20*8*6 etc. |
7 | graphite grinding strip | 40*10*10 etc. |
8 | graphite drilling mold | φ56 24*4*10 etc. |
9 | graphite reamer mold | φ85 φ65 etc. |
10 | graphite cutting sheet | personalized customization |
11 | graphite tube | personalized customization |
12 | Other customized graphite mold |
Graphite molds for hot-pressed sintered diamond tools are responsible for the dual functions of heating elements and mold support in the manufacturing process of diamond tools. The quality of graphite molds directly affects the dimensional accuracy and appearance of diamond tools.
Hot pressing sintering process requirements: the temperature reaches (1 000±2) ℃, the molding pressure is 16-50 MPa, the heat preservation and pressure holding time is 15-30 min, and the environment is in a non-vacuum state. Under these working conditions, it is required that the graphite mold of the forming and heating element has electrical conductivity, high resistivity, and sufficient mechanical strength, and it also needs to have good oxidation resistance and long service life to ensure that the diamond Dimensional accuracy and excellent performance of the tool.
Artificial graphite molds have the following characteristics in pressure sintering of cemented carbide: First, if the pressing temperature is increased to 1350-1450 degrees, the required unit pressure can be reduced to 67-100 kgf/cm2 (that is, 1/10 of the cold pressing pressure); Second, pressurization and heating are carried out in the same process, and a dense sintered body can be obtained after a short period of sintering.
The graphite molds for diamond tool manufacturing produced by Sunny Graphite mainly use graphite raw materials with ultra-fine particle structure, high purity and high graphitization degree, and the parameters as follows:
Density g/cm³ | 1.85-1.9 |
Resistivity μΩ·m | ≤12 |
Compressive strength Mpa | ≥70 |
Porosity % | ≤26 |
Elasticity Modulus Gpa | 6-18 |
Thermal expansion coefficient 10-6/ºC | 1.47-4.25 |
Ash content % | ≤0.05 |
Temperature resistance ºC | ≤4350ºC |
Graphite mold produced by our company has the characteristics of small porosity, compact structure, high surface finish and strong oxidation resistance. According to specific working conditions, the average service life can reach 30-40 times.
We can customize graphite molds according to your drawing requirements, and we can also assist you in designing molds that meet production requirements based on our more than 40 years of experience. The error of the molds processed by our company is ±0.02mm. Diamond tool dies are available in the following categories:
item | product name | specification and model |
1 | graphite gasket | φ100*2 etc. |
2 | graphite boat/box | Outside φ306*96*60 inside 290*80*50 etc. |
3 | graphite grain | φ3*2.5 etc. |
4 | graphite bead mold | φ11.5*6 etc. |
5 | graphite diamond tool die | 40*3.6*10 etc. |
6 | graphite gangsaw mold | 20*8*6 etc. |
7 | graphite grinding strip | 40*10*10 etc. |
8 | graphite drilling mold | φ56 24*4*10 etc. |
9 | graphite reamer mold | φ85 φ65 etc. |
10 | graphite cutting sheet | personalized customization |
11 | graphite tube | personalized customization |
12 | Other customized graphite mold |
