Custom Precision Silicon Nitride Stalk Tube for Low-Pressure Casting

• Customization: Available
• Application: Chemical Processing, High-Temperature Furnaces
• Ceramic Tube & Rod: Ceramic Tube
• Model NO.: SF-CRT
• Temperature Resistance: 1500℃
• Name: Silicon Nitride Ceramic Riser Tube
• Type: Refractory Material
• Material: Silicon Nitride Material
• Color: Gray
• Transport Package: Carton and Package
• Specification: 1.1*1.1*0.12
• Trademark: SEFU
• Origin: China
• HS Code: 6909320000
• Production Capacity: 500000 Pieces /Month
• Package Size: 110.00cm * 110.00cm * 210.00cm
• Package Gross Weight: 800.000kg

Product Description

Ceramic Riser Tube for Aluminum Alloy Die Casting

High temperature resistance · Corrosion resistance · Long life · Customizable

Ceramic riser tube is the core component of the low-pressure casting process, mainly used to smoothly transport molten metal from the holding furnace to the mold cavity. We mainly supply aluminum titanate (Al₂TiO₅) riser tubes and silicon nitride (Si₃N₄) riser tubes, which are specially designed for transporting aluminum alloy molten liquid, ensuring smooth filling and preventing oxide inclusions, thereby significantly improving casting yield.

Our Advantages

Resistant to thermal shock, resistance to sudden cooling and heating
Resistant to erosion, resistant to aluminum liquid corrosion, long life
High mechanical strength, high toughness, impact resistance, and good wear resistance

Silicon Nitride (Si₃N₄) Riser Tubes
Silicon nitride (Si₃N₄) riser tubes are a high-performance ceramic material riser tube designed for aluminum alloy casting environments. With its ultra-high temperature resistance, excellent thermal shock resistance, and extremely strong corrosion resistance, silicon nitride riser tubes perform well in high-end precision casting fields (such as automotive, aerospace components), which can significantly improve casting quality and reduce maintenance costs.

Key Function

Metal liquid transportation: ensure directional and smooth flow of molten metal.

Flow control and oxidation prevention: reduce turbulence and gas entrapment, and some designs are sealed or coated to isolate air.

Temperature maintenance: The material needs to be resistant to high temperatures to avoid clogging caused by the solidification of the molten metal.

Suitable processes: low-pressure casting, differential pressure casting
 

Product Parameters

Maximum Outer Diameter	430mm
Thickness	10-15mm
Maximum Length	1350mm

Custom Precision Silicon Nitride Stalk Tube for Low-Pressure Casting

Detailed Photos

 

Working principle:

It is usually a vertically placed ceramic tube, one end of which is connected to the molten metal in the insulation furnace, and the other end leads to the mold pouring system. Under the pressure of compressed gas (usually inert gas), the molten metal rises along the riser and fills the mold through the gate. After the filling is completed, the pressure is released and the unsolidified molten metal flows back to the insulation furnace.
Application Areas

Aluminum alloy wheel: a typical low-pressure casting product, the riser tube needs high corrosion resistance.

Automotive parts: such as engine cylinder block, housing, etc.

Complex thin-walled parts: precision castings that require smooth filling.

Why choose SEFU Riser Tube?
Industry in-depth cultivation: more than 10 years of experience in the research and development of aluminum alloy casting materials, serving customers around the world.
Strict quality control: ISO 9001 certified, each batch is tested for air tightness, pressure resistance and microstructure.
Customized service: provide personalized design solutions based on customer mold structure, alloy composition and production rhythm.

Support sample delivery · technical consultation · after-sales tracking
 

Product Recommendations

 

Graphite Rotor Efficient degassing in aluminum liquid

Ceramic Filter 10-60PPI optional, filtration efficiency > 90%

Tap Out Cone Precise flow control, reducing oxidation slag

 

Packaging & Shipping

 

Certifications

 

FAQ

Q: Are you Factory?

A: Definitely, we are a factory. Welcome to visit us!

Q: What Parameters should I provide to you for a proper quotation?
A: Application, pore size, dimension, color, quantity, packing requirements, trade terms.

Q: How can you control your quality?
A: We have a complete QC system for the chemical composition and physical properties of each production process. After production, all the goods will be tested, and we have the quality certificates with ISO9001.

Q: What is your lead time?
It usually takes about 15- 20 days after receiving the PO.

Q: Do you provide Samples?
A: Yes, our factory provides samples for testing. pls send detailed parameters to us. (if customized, withdrawing is best) The samples will be charged or free according to the specific requirements.

Q: What are the Payment Terms?
A: We accept T/T, L/C, West Union, etc.

Q: How can I get samples?
A: We are honored to offer you the samples.

Q: What about your Packing?
A: We provide carton boxes, pallets, etc. OEM packing is available too.

Q: Do you have R&D services?
A: We have an R&D department to assist you in developing new products.

Q: Does your company accept customization?
A: We accept OEM service.

Q: Can we visit your company?
A: Yes, you are welcome to visit our company.