Most of the material is made of high chromium wear-resistant cast iron, high chromium cast iron has good flow, larger shrinkage, large tendency to crack, so it can extend the service life of hammer he
Most of the material is made of high chromium wear-resistant cast iron, high chromium cast iron has good flow, larger shrinkage, large tendency to crack, so it can extend the service life of hammer head and lining board
1, the casting process of hammer head and lining board
Through the comparison of various elements of burning cupola and medium frequency furnace melting process, the chromium in the cupola burning is too large, and other elements in the melting process is difficult to control, so the use of intermediate frequency furnace molten iron, the melting temperature is 1450 degrees Celsius, the pouring temperature is 1320 ~ 1360 degrees. The pouring temperature is too high will the casting properties of coarse grain, unfavorable; very low pouring temperature, casting surface cold septum, wrinkled skin. In addition, hammerhead and cleading should focus on riser system on the casting process, the iron level steadily filling casting and have good feeding.
2, heat treatment of hammer head and lining board
Heat treatment is the important process of high chromium cast iron casting obtain excellent wear resistance, so the casting must be quenched and annealed in annealing. After cleaning can eliminate the internal stress generated during casting, increase the plasticity and toughness of casting matrix; quenching can make the abrasion resistance of high chromium cast iron to obtain martensite, the hammerhead and cleading to obtain high abrasion resistance. In the heat treatment process, heating heating furnace to maintain the temperature in uniform and warming up slowly, to prevent the parts from cracking during the heating process.

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Shuangfeng Qirun Machinery Parts IMP&EXP Co.,Ltd, specializing in the production of domestic and foreign brands of crusher wear spare parts manufacturers, production of domestic brands, Hua Yang, Shan Bao, SBM brands such as crusher wear parts, spare parts, as well as foreign brands, common, Sandvik, TEREX and other import brands crusher spare parts, wear parts, mining quarry companies such as crusher wear parts of choice. We achieve cost-effective localization of imported spare parts, service users at home and abroad. The company can be matched with various brands of hydraulic crusher electric parts, sealing parts, standard parts and other accessories, can meet the needs of one-stop shopping for customers at home and abroad the demand.
Shuangfeng Qirun Machinery Parts IMP&EXP Co.,Ltd has thirty years of production experience, and years of experience in processing export products, products have been exported to the United States, Canada, Australia, Sweden, Finland, Russia, Ukraine and Southeast Asia and other countries and regions. Shuangfeng Qirun Machinery Parts IMP&EXP Co.,Ltd product using the original material, high-quality raw materials, casting and heat treatment process we have a unique thirty years production experience, to ensure complete interchangeability, and original spare parts with high quality and competitive price, provide quality products, quality services for the majority of users.
Shuangfeng Qirun Machinery Parts IMP&EXP Co.,Ltd wearable parts can be customized to map, and if there is no map, the company has professional mapping personnel to help you mapping, after customization
Contact:Sales Director: Eileen Cai ;
Email: sales@qrmech.com;
Mobile telephone: +8618973821771
Trusted by customers in 30+ countries. Standard lead time 15-30 days.
High manganese steel Mn13, Mn13Cr2, Mn18Cr2 and Mn22Cr2, plus high chrome iron (Cr26) for fine crushing. We select the material based on your abrasive and impact conditions - send your working conditions for a recommendation.
Aftermarket parts fit Metso (HP, GP, C, NP series), Sandvik (CH, CS, H, S series), Symons 2FT-7FT, Terex Pegson, Kleemann, McCloskey, Shanbao, SBM, Telsmith, Minyu, Hazemag and more. Any model can be custom made by drawing or sample.
Yes. Send a drawing (PDF, DWG or CAD) or a used sample. We measure, draft and confirm all dimensions with you before production. OEM part numbers are welcome for reference.
Standard lead time is 15-30 days and samples ship in 7-15 days. MOQ is flexible - trial orders from 1 piece are accepted.
ISO 9001 certified factory (Kaixin Certification, CNAS-accredited; certificate valid through June 2028). Every shipment includes a Material Test Report (MTR) with chemical composition and mechanical properties.
Export-standard wooden crates with rust protection. Sea and air freight from Shanghai and Ningbo ports to worldwide destinations.
| Material | Initial Hardness | Best For |
|---|---|---|
| Mn13 (ASTM A128) | HB 200-230 | General crushing with medium impact |
| Mn13Cr2 | HB 210-240 | Standard jaw plates and cone liners |
| Mn18Cr2 | HB 220-250 | High-impact, abrasive feed |
| Mn22Cr2 | HB 230-260 | Severe impact, hard and large rock |
| High Chrome Cr26 | HRC 58-62 | Blow bars, fine crushing of abrasive material |
* High manganese steel work-hardens under impact to 500+ HB at the wearing surface, giving long life in hard-rock crushing.
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