Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact us for further information.
Yes, we require all international orders to have an ongoing minimum order quantity. If you are looking to resell but in much smaller quantities, we recommend you check out our website.
Yes, we can provide most documentation including Certificates of Analysis / Conformance; Insurance; Origin, and other export documents where required.
For samples, the lead time is about 7 days. For mass production, the lead time is 20-30 days after receiving the deposit payment. The lead times become effective when (1) we have received your deposit, and (2) we have your final approval for your products. If our lead times do not work with your deadline, please go over your requirements with your sale. In all cases we will try to accommodate your needs. In most cases we are able to do so.
You can make the payment to our bank account, Western Union or PayPal:
30% deposit in advance, 70% balance against the copy of B/L.
We warranty our materials and workmanship. Our commitment is to your satisfaction with our products. In warranty or not, it is the culture of our company to address and resolve all customer issues to everyone’s satisfaction.
Yes, we always use high quality export packaging. We also use specialized hazard packing for dangerous goods and validated cold storage shippers for temperature sensitive items. Specialist packaging and non-standard packing requirements may incur an additional charge.
The shipping cost depends on the way you choose to get the goods. Express is normally the most quickest but also most expensive way. By seafreight is the best solution for big amounts. Exactly freight rates we can only give you if we know the details of amount, weight and way. Please contact us for further information.
1. How can I avoid the appearance of pores in silica sol precision casting?
To avoid the appearance of pores in silica sol precision casting, it is recommended to set the vent holes directly above the height during processing and to reasonably set the pouring system. This helps to improve the air permeability of the precision casting shell, reducing the chances of pores forming.
2. What is the importance of vent holes in silica sol precision casting?
Vent holes play a crucial role in silica sol precision casting as they allow the escape of trapped gases during the casting process. Properly positioned vent holes ensure better air permeability in the casting shell, reducing the formation of pores and improving the quality of the final product.
3. How can I improve the air permeability of the precision casting shell?
To improve the air permeability of the precision casting shell, it is essential to set the vent holes directly above the height during processing. This helps in the effective removal of trapped gases, reducing the chances of pore formation and ensuring a better-quality casting.
4. Is it possible to adjust the pouring temperature to avoid pore formation in silica sol precision casting?
Yes, adjusting the pouring temperature can help avoid pore formation in silica sol precision casting. Increasing the pouring temperature during the casting process can help improve the flow of the liquid metal, reducing the chances of gas entrapment and pore formation.
5. What is the ideal pouring speed for silica sol precision casting?
To avoid pore formation, the distance between the ladle mouth and the pouring speed should be reduced as much as possible. By lowering the distance and pouring speed, the liquid metal can flow smoothly, minimizing the chances of trapped gases and improving the overall casting quality.
6. Can the pouring system contribute to pore formation in precision casting?
Yes, the pouring system can contribute to pore formation in precision casting if not properly set. It is important to reasonably set the pouring system to ensure smooth and controlled pouring of the liquid metal. This helps reduce turbulence, gas entrapment, and ultimately, the formation of pores.
7. How do trapped gases lead to pore formation in precision casting?
Trapped gases within the casting shell can lead to pore formation in precision casting. When the liquid metal is poured into the mold, these trapped gases get trapped within the casting, resulting in voids or pores. Proper venting and optimal pouring conditions help in the effective removal of these gases, reducing pore formation.
8. Can silica sol precision casting be used for a variety of metals?
Yes, silica sol precision casting can be used for a variety of metals, including steel, aluminum alloys, and various other non-ferrous metals. The process is versatile and can be adapted for different metal alloys, providing high precision and quality castings.
9. What are the advantages of silica sol precision casting?
Silica sol precision casting offers several advantages, including excellent dimensional accuracy, fine surface finish, intricate design flexibility, and high repeatability. It also allows for the casting of complex shapes with thin walls and intricate details, making it suitable for industries such as automotive, aerospace, and jewelry.
10. Are there any limitations to silica sol precision casting?
While silica sol precision casting has many advantages, it also has some limitations. It can be more expensive compared to other casting methods, and the process is relatively slower. Additionally, the size of the castings may be limited due to the properties of the silica sol material. However, advancements in technology have mitigated some of these limitations, making it a viable choice for many applications.