Crusher and impact crusher is widely used to get on a small hammer to reports, but the high-chromium alloy poor wayward, prone to fracture in the absence of the hammer bracing situation. To this end Xin Li forging hammer develop high chromium compound, namely the use of high manganese steel hammer handle, hammer workspace using high-chromium alloy, the two complexes together small hammer classification, so that the hammer head with high hardness, and hammer shank with high toughness, give full play to their respective advantages of the two materials, and to overcome the shortcomings of a single material, hammerhead meet performance requirements, especially for small hammer crush high hardness materials factory price, such as quartz, basalt, etc., but Its manufacturing process complexity, process requirements more stringent, higher prices, customers should decide what to buy based on the specific circumstances of the hammer. High chrome hammer is high chromium cast iron, carbon steel as raw material, the use of cast-process manufacturing high chromium cast iron / steel bimetal composite hammer. Then as we expand on the need for pre-heating device is designed de zshi. Due to the high chromium cast iron metal liquid at room temperature and high temperature carbon steel combination of molding, the total lack of heat, high chrome hammer difficult to achieve metallurgical bonding material interface. There is a big stress material interface, combined with the strength of the interface is difficult to achieve the test requirements, significantly affect the microstructure and properties of the sample. Therefore, the test of the core material is preheated, so preheated core combined with liquid metal forming, so that the two achieve a good metallurgical bond to reduce residual stress, and to improve the bonding strength. Therefore, before entering the liquid-solid core material effect, should be designed to a preheating means for preheating the core material to a certain temperature. In the past mostly used for core preheat oven to finish, when heated to the required temperature, out into the cavity, and then close the box pouring molten metal. The whole process due to the long heating time, the heating element is easily oxidized. Meanwhile, preheat removed from the furnace to the casting, it is generally difficult to control the middle of the time, leading to the actual temperature changes before preheat a large complex, can not guarantee the quality of stable complex interface. Xinghua small hammer, Li Xin Heavy Industries, a small hammer provided by Xin Li Xin Li Gongyi City Heavy Machinery Manufacturing Co., Ltd .. "Hammer, grate, linings, crusher parts, hammer crusher, mobile crusher station" preferred Gongyi City Xin Li Heavy Machinery Manufacturing Co., Ltd. (2), the company is located: Gongyi City Station Street Town HE Yao village, Over the years, Li Xin Heavy Industries to provide customers with the best quality service, Contact: Yu Jingli. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Xin Li Heavy expect to be your long-term partner!