Your Professional Graphite Parts Supplier
Henan Daking Import and Export Co., Ltd. (Henan Daking for short) is one of China's professional production, research and development, sales of graphite mold manufacturers. The company is committed to providing customers with high quality graphite raw materials and precision graphite products processing. Henan Daking is willing to cooperate wholeheartedly with new and old customers at home and abroad with superb technology, high quality products and sincere service, to create a better tomorrow hand in hand.
Why Choose Us
Quality products
The company is committed to providing customers with high quality graphite raw materials and precision graphite products processing.
Rich experience
We have years of industry experience and a team of experienced engineers and technicians to ensure consistent precision and high quality of our products.
Reliable service
Our team is committed to providing reliable and consistent service, ensuring that you receive high-quality products and customer support from us every time.
One-stop solution
We are one of China's professional production, research and development, sales of graphite mold manufacturers.
Advantages of Small Cone Graphite Reamer
Access to small areas
The steep taper and small diameter of the cone allow the artist to easily enlarge and shape holes in small glass objects, such as mouthpieces or loops, without the tool's point "bottoming out".
Fine adjustments
Glassblowers use the reamer for making subtle adjustments and corrections to holes that are already close to the desired size, while brass reamers are used for more aggressive shaping.
Controlled shaping
The conical shape expands the opening gradually as it is rotated, providing more control over the final shape compared to simply drilling.
Thermal Stability: Graphite molds excel in environments with extreme heat, making them ideal for aerospace applications. The ability to withstand temperatures exceeding 3000°C ensures that intricate aerospace components can be precisely molded without compromising structural integrity.
Dimensional Accuracy: Graphite molds, with the excellent dimensional stability, enable the production of intricate and complex components with tight tolerances.
Low Thermal Expansion: The low coefficient of thermal expansion of graphite molds is a key factor in maintaining shape and dimensionality under high-temperature conditions.
Chemical Inertness: High-temperature graphite molds, being chemically inert, safeguard against reactions that could compromise the quality of the molded parts.
Cost Effectiveness
Graphite being far more affordable than tool steel, brings down the tooling costs. Also, graphite die casting demands no heat treatment.
Fast Turnaround
Graphite die casting is perfect for short-run manufacturing needs. It can deliver many parts in record time.
High-Quality Finishes
Graphite die molds create castings with great surface finishes.
Small Cone Graphite Reamer Types
General Purpose
Superior performance over high speed steel and cobalt; good in a wide variety of materials
Material Specific
Excellent in large production runs due to material specific carbide & tool geometry
Coolant Fed
Exceptional performance and tool life using material specific reamer technology and coolant fed capabilities; maximizes feeds & speeds
Detailed explanation of Graphite Cast Mould casting process
Prepare graphite mold casting materials
Material selection
High-quality graphite material is the basis for ensuring the quality of the mold. Graphite materials with high purity and uniform density are usually selected. According to different casting needs, you should select fine-grained graphite or medium-grained graphite. Fine graphite can provide better surface finish, suitable for casting with high surface quality requirements.
Material processing
First of all, cut the selected graphite material. According to the mold design size, the graphite is cut into a rough shape using cutting equipment. Then mechanical processing, through the CNC machining center and other equipment for graphite milling, drilling and other operations, precisely machined mold cavity, core and other structures. To ensure that the dimensional accuracy of the mold meets the design requirements.
Create patterns
Design ideas
The design of the model needs to be comprehensively considered according to the shape, size, accuracy requirements and production batch of the final casting. In the design process, you should fully consider the shrinkage rate of the casting and reserve the appropriate processing allowance. For complex shapes of castings, it is also necessary to design a reasonable parting surface and pouring system. To ensure that the liquid metal can evenly and smoothly fill the mold cavity.
Processing method
This mainly includes mechanical processing and 3D printing. Machining is suitable for making models with regular shapes and large batches. And the dimensional accuracy and surface quality of models can be guaranteed by CNC machining equipment. For some models with complex shapes and unique structures, 3D printing technology has obvious advantages.
Equipment selection
Commonly used heating crucible equipment are resistance furnace, induction furnace, etc. The resistance furnace heats the crucible by heating the resistance wire. Its temperature control is more accurate, simple operation, suitable for small casting enterprises or high temperature stability requirements of the casting process.
Temperature control
In the heating process, accurate temperature control is essential. Different metal materials have different melting points and pouring temperature ranges. And appropriate heating temperature curves need to be set according to the actual situation.
Metal pouring
Metal melting
Put the required metal into the heating graphite crucible to melt. When melting, add appropriate amount of flux according to the characteristics of the metal. Remove impurities and gas to improve the purity, and stir to make the liquid metal composition uniform.
Casting operation
After the metal liquid reaches the appropriate pouring temperature, it is quickly and smoothly poured into the mold cavity. Control the speed and quantity during pouring to prevent defects such as insufficient pouring and cold insulation. Large or complex castings may require different pouring methods such as bottom injection and side injection. To ensure that the metal liquid fills all corners of the mold.
Remove impurities
Refining agent method
Add an appropriate amount of refining agent to the metal liquid. It chemically reacts with impurities to generate slag or gas that floats to the surface for removal. Commonly used borax, sodium carbonate, etc., different metals need to choose the appropriate refining agent.
Filtration method
Ceramic filter is set in the pouring system. As the liquid metal flows through, impurities are filtered to improve the purity of the liquid metal entering the cavity. Select filter reasonably according to liquid metal flow and impurity size.
Demolding parts
Ejector time
Ejecting time is very critical, too early casting is not solidified easy to deformation and damage. Too late due to the increase of friction, increase the difficulty of stripping and even damage the mold. According to the casting material, thickness, mold structure, etc., determined by experience or simulation analysis.
Stripping operation
Ejecting castings with ejecting rod, ejecting block and other mechanical ejecting devices. During the process, the ejection force is even and the local deformation of the casting is avoided. You can also apply release agent to the surface of the mold to reduce friction and make the release smoother.
Key applications of Graphite Cast Mould
Non-ferrous Metal Continuous Casting and Semi-Continuous Casting: Graphite molds are used in the direct continuous or semi-continuous manufacturing of rods or pipes from molten metal. This method has been adopted domestically for copper, copper alloy, aluminum, aluminum alloy, and other non-ferrous metals. The use of graphite molds increases the mold speed and improves the quality of products.
Pressure Casting: Graphite molds have been successfully used in the pressure casting of non-ferrous metals.
Precious Metals Products Making: In addition to jewelry making and Coin minting, graphite molds are widely used in the production of industrial components.
Hot Pressing Die: The graphite hot-pressing die is used in the pressure sintering of cemented carbide. It reduces the required unit pressure and allows for a compact sintered body to be obtained after a short time of sintering.
Glass Forming: Graphite molds are used as casting molds for glassware due to their small coefficient of thermal expansion and the ability to withstand changes in quenching and heat.
Sintered Mold: In powder metallurgy processes such as cemented carbide production, graphite molds are used to make stamping molds and crucibles for sintering.
Maintain Of Small Cone Graphite Reamer
Check after each use: Inspect the reamer for debris, especially if used on soft metals, as buildup can affect its cutting ability.
Clean the cutting edges: If buildup is suspected, gently draw the reamer's cutting edges against a fine-grit diamond honing tool or a suitable abrasive material three to four times to remove the buildup.
Remove remaining debris: After using an abrasive, clean any remaining abrasive dust or debris from the flutes with a solvent or low-pressure compressed air.
Prevent corrosion: Lightly oil the reamer with the same oil used for reaming to prevent corrosion.
Clean flat surfaces: For tools with large flat surfaces, lightly sand with the softest sandpaper to refresh the polish, then use a cardboard polishing block and a dry paper towel for the final polish.
Wipe down: After polishing or sanding, wipe the tool down with a wet rag to catch any remaining graphite dust.
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We're professional graphite parts manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy high-grade graphite parts made in China here from our factory.
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