Custom Made Brass Threaded Long Hex Coupling Nut
2. Steel: C45 (K1045), C46 (K1046), C20
3. Brass: C36000 (C26800), C37700 (HPb59), C38500 (HPb58)
4. Bronze: C51000, C52100, C54400, etc.
5. Titanium: GR1, GR2, GR5, etc.
6. Aluminum: Al6061, Al6063, etc.
7. Carbon Steel: C1006, C1010, C1018, C1022, C1035K, C1045
8. Alloy Steel: SCM435, 10B21 | | Surface Finish | Zn-plated, Ni-plated, Passivated, Tin-plated, Sandblast and Anodize, Chromate, Polish, Electro Painting, Black Anodize, Plain, Chrome Plated, Hot Dip Galvanizing | | Normal Diameter | M6-M36 or as per customer requirements | | Heat Treatment | Tempering, Hardening, Spheroidizing, Stress Relieving | | Manufacturing Process | Heading/washer assembly/threading/secondary machine/heat treatment/plating/anti-slipping/baking/QA/package/shipping | | Sample Availability | We can make samples within 7 days free of charge if we have existing tooling | **Why Choose Us?** 1. 22 years of R&D and manufacturing experience 2. No question refund within 3 days 3. Pass international standards 4. Provide non-standard, standard, OEM, ODM, and customized services 5. With ISO, SGS, RoHS, CE certification and DIN, GB, ISO standards 6. Short lead time 7. Small quantity available 8. Can design according to customer requests 9. Can be packed as per customer requirements 10. Online service is supported; contact us via Made in China TM (bailianhardware) for urgent needs **FAQ** 1. **Q: How do you ensure the quality of your products?** **A:** 100% inspection during production. Our products are certified to ISO9001 and RoHS international quality standards. 2. **Q: What is the delivery time?** **A:** Generally, it takes 15–30 days after confirming all details. 3. **Q: What is your packaging?** **A:** Usually PE bag, small box, plastic box. We can also pack according to your requirements. We are a professional manufacturer specializing in screws, bolts, nuts, and other fasteners. With extensive experience in the industry, we offer high-quality products at competitive prices. Whether you need standard or custom-made parts, we are here to meet your needs. Contact us today for more information!
Casting Polyurethane Prepolymer
Casting Polyurethane Prepolymer used for making wheels, Sieve, machinery parts, sealing ring, PU rollers and other elastomers.
We provide customized products , polyester and polyether in PTMEG/PPG based materials
Casting polyurethane prepolymers involves a process where a liquid mixture of polyols and isocyanates is poured into a mold or container and allowed to cure or solidify. This process is commonly used in various industries such as automotive, construction, and manufacturing.
Here is a step-by-step guide on how to cast polyurethane prepolymers:
1. Prepare the mold: Clean the mold thoroughly and ensure it is free from any debris or contaminants. Apply a mold release agent to facilitate the easy removal of the cured polyurethane.
2. Measure and mix the components: Measure the desired amount of polyol and isocyanate components. The specific ratio will depend on the desired properties of the final product, which can be found in the product's technical data sheet. Pour the measured components into a clean mixing container.
3. Mix the components: Use a mechanical mixer or a high-speed drill with a mixing attachment to thoroughly mix the polyol and isocyanate components together. Make sure to mix for the recommended amount of time specified by the manufacturer to ensure complete homogeneity.
4. Degassing: After mixing, it is important to degas the mixture to remove any trapped air bubbles. This can be done by placing the mixture in a vacuum chamber and applying vacuum pressure for a specified period of time. Alternatively, a vacuum degassing unit can be used.
5. Pouring the mixture: Once the mixture is properly degassed, pour it into the prepared mold or container. Take care to avoid introducing any additional air bubbles during the pouring process.
6. Curing: Allow the poured mixture to cure at room temperature or, if necessary, in a temperature-controlled environment. The curing time will vary depending on the specific polyurethane prepolymer used and the desired hardness or flexibility of the final product. Follow the manufacturer's recommendations for curing time and temperature.
7. Demolding: After the polyurethane has fully cured, carefully remove it from the mold or container. Use caution to prevent any damage to the cured part.
8. Post-curing (optional): Depending on the specific polyurethane prepolymer used, post-curing may be required to optimize the material's properties. This can be done by subjecting the cured part to elevated temperatures for a specific period of time.
It is important to note that casting polyurethane prepolymers requires proper safety precautions, such as wearing appropriate personal protective equipment (PPE) and working in a well-ventilated area. Always follow the manufacturer's instructions and guidelines for handling and working with polyurethane prepolymers.
Good Wheel Polyurethane Prepolymer,Casting Polyurethane Prepolymer,Casting Pu For Elastomers,Custom Polyether Polyurethane Prepolymer
XUCHUAN CHEMICAL(SUZHOU) CO., LTD , https://www.xuchuanchem.com