Factory Price Graphite Sintering Mold for Diamond Segment

• Type: Graphite Mold
• Composition: Carbon
• Carbon Content: High-Carbon
• Grade: Industrial Grade
• Forming Way: Isostatic Graphite
• Bulk Density: 1.75g/cm3-1.85g/cm3
• Model NO.: TJJGS013
• Application: Melting Precious Mateal
• Flexural Strength: No Less Than 35 MPa
• Compressive Stregnth: No Less Than 60 MPa
• Transport Package: Carton, Plywood Case or as Customers′ Requirement.
• Specification: can be customized
• Origin: China
• Production Capacity: 500000 PCS/Month

Product Description

Features:
High purity
High Density
High temperature resistance
Good thermal conductivity
Acid and alkali corrosion resistance
Strong thermal shock resistance
High mechanical strength
High precison machined by CNC equipments

Why choose us:
Selected Materials
Factory direct sale
A wide range of sizes for choice
All of our products can be customized
 

Graphite mold for sintering

Our graphite mold is used for sintering diamond saw segment, diamond core drills, ceramic cutting tool inserts and ceramic armor plates. Our graphite material provide good performance in the hostile environment of extreme heat and pressure in the manufacturing of metal, ceramic and diamond tools.

Our experienced engineering team will help you find the right grade of graphite material for your application, and design mold for you.

What is diamond segment?
The diamond segment is a kind of artificial diamond tool commonly used in stone cutting. It has a hard texture and strong grinding performance. These segments are sintered from very fine metal powder and diamond powder.

What is sintering? How to sinter?

The diamond segment turns the powder into the diamond block shape that we finally see through two processing processes of cold pressing and hot pressing(sintering). The powder is initially pressed and formed by cold pressing, the sintering process is to finally sinter the cold-pressed sheet-like structure into a more tightly bonded diamond segment.
In the sintering process, the main sintering methods are solid-phase sintering and liquid-phase sintering. Solid-phase sintering is the main combination method. Through high temperature and high pressure, the atoms between metals interact with each other, making the structure more compact. In a high-pressure environment, an alloy-shaped metal block is formed, so the formation of the diamond segment is not a process of melting all the original materials of the segment, and then cooling and combining it together, but using a solid-phase sintering method. Metal powder and diamond better form a bond with firm structure, high strength, suitable rigidity and hardness. Since the bond mainly plays the role of fixing the diamond and protects the diamond like the metal bond, the sintering process is also called the matrix bond.

How is the diamond segment sintered through graphite?

It is divided into several steps:

1. Customized graphite mold: The customization of the mold is the first thing to do. According to the size of the segment, typesetting is performed on the graphite mold of the specified size. Generally speaking, if the size of the segment is relatively large (about 24mm in length), the layout when fabricating use the upper, middle and lower rows for arrangement. If the segment of small and medium size (about 40mm in length) is arranged, the upper and lower layers are arranged in the way of arrangement, and other sizes will be arranged according to the actual size.

2. Molding: diamond segment are put into the graphite mold, which are the working layer (edge material), groove, working layer (middle material).... groove, working layer (edge material). After placing them in the diamond segment mold, the bolts can be tightened. Then they start to be sintered.

3. Sintering: The graphite mold is quickly energized. Due to the strong resistance of graphite, the graphite heats up rapidly under the working state of high current. When the temperature rises to a certain level, the increase of the current is controlled to maintain a constant temperature. Usually the process is called the heating and holding stage of the sintering of the segment, and this stage lasts for about 8 minutes.

4.After eight minutes:take the graphite mold out of the sintering machine and cool it at room temperature. This process is called the cooling stage. Due to the good heat preservation effect of graphite, the segment can continue to shrink during the cooling process. The segment and the mold can be peeled off better.

Graphite is mainly used for mold sintering segments, which mainly play several roles, such as shaping, preventing material flow, rapid heating, and constant heat preservation. Therefore, at present, diamond segments are sintered with graphite molds.


Graphite Materials Specifications:
    

Molded Graphite
Property	FT-G4	FT-G5	Unit
Apparent Density	≥1.78	≥1.85	g/cm^3
Ash value	≤500	≤500	ppm
Shore Hardness	≥40	≥45	HSD
Specific Electrical Resistivity	≤12	≤10	μΩm
Flexural Strength	≥35	≥40	Mpa
Compressive Strength	≥60	≥70	Mpa
Max Grain Size	≤43	≤43	μm
Thermal Expansion (room temperature to 600ºC)	≤4.5	≤4.4	10-6/ºC

Any size and shape can be customized. We can produce accordign to drawing from cusotomers. 





Safe Packing: 

Wide Application of Graphite: 

FAQ

♥ When can i get the price?
We usually quote within 12 hours after getting your detailed requirements,like drawing,size,quantity etc. If it is an urgent order, you can call us directly.
♥ Do you provide samples?
Yes, samples are available for you to check and test our quality. 
Samples delivery time will be about 3-10 days. 
♥ What about the lead time for mass product?
The lead time is based on the quantity,about 7-14days.
♥ What is your terms of delivery?
We accept FOB, CFR, CIF, EXW, etc. You can choose the most convenient way for you. Besides that, we can also shipping by Air and Express. 
♥ Product packaging?
We pack in plywood cases, or according to your requirements.
♥ Notice
Please note that the price on Made In China is a rough price.The actual price will depends on raw material grade,exchange rate ,wage and your order quantity .Hope to cooperate with you.Thanks !