The production of cast iron usually needs to withstand a high temperature environment of 1300-1500℃, which poses a severe challenge to the heat resistance of runner materials. Although traditional ceramic runners can meet this temperature requirement, they have many limitations in practical applications.
Environmentally friendly paper runner products can withstand a high temperature environment of 1640℃ through special formulas and process treatments. This breakthrough mainly comes from three aspects:
- Use high-purity refractory fiber to reinforce the matrix
- Add nano-scale high-temperature resistant fillers
- Optimize material microstructure design
Innovative breakthroughs and application advantages of paper runner
The weight of paper runners is only 1/3 of that of ceramic products. This feature completely changes the operation mode of the runner system. Workers can easily complete handling, cutting and installation, greatly reducing labor intensity.
Comparative analysis with traditional ceramic runners
- Heat resistance: The new paper runner is close to the level of ceramics
- Use cost: The overall cost is reduced by 20-30%
- Production efficiency: The molding time is shortened by 15-20%
Practical application
Scope of application: Currently applicable to gray cast iron, ductile iron, etc.
Applicable casting process range: sand casting process, lost foam casting process, V-method casting process
Types of cast iron parts suitable for production
- Auto parts: brake drums, brake discs, engine cylinders, cylinder heads, gearbox housings
- Mechanical equipment parts: pump bodies, valve bodies, machine tool beds, reducer housings
- Pipe fittings: various flanges, pipe joints, valve housings
- Engineering machinery parts: wheels, hydraulic parts
Storage requirements: Keep a dry environment to prevent moisture absorption
Conclusion:
The emergence of high-temperature resistant paper runners provides a new option for the production of cast iron parts. With the continuous advancement of material technology, paper runners are expected to replace traditional ceramic runners in more high-temperature casting fields, and promote the casting industry to develop in a more efficient and environmentally friendly direction. It is recommended that foundries gradually carry out verification applications according to specific production conditions to fully evaluate their technical and economic feasibility.