Some stone factory friends are still doubtful about high chromium hammers and high manganese steel hammers which wear? Starting with high manganese steel hammers, stone hammers have been used for 3 days, more durable than forging hammers, think it is good, some friends said that high chromium hammers can wear better, the owner of the stone factory is somewhat doubtful, purchased a batch of high chromium hammers for trial use, the results are more durable than high manganese steel hammers, high chromium hammers grinding hard stone wear resistance is better than high manganese steel hammers, can reduce human labor, lift. Yield at high stage.
Supply of high chromium hammers, high complex hammers, high chromium cast iron composite hammers, manganese steel hammers, Tel: 15911129791, Beijing Rubble Technology Co., Ltd.
Since some customers have tasted the sweetness of high chromium wear-resistant hammers, they have been consulting online about where to buy high-quality crusher hammers. Beijing Small Gravel Technology Co., Ltd. is a professional manufacturer of wear-resistant hammers. The hammers produced by the company are: high manganese steel hammers, high chromium hammers, high chromium composite hammers, high chromium alloy hammers, bimetal composite hammers and so on. Each kind of hammer has its own advantages and disadvantages. Small Gravel Technology hammer experts will customize more wear-resistant alloy crusher hammers for you according to your working conditions.
Hammer head of high manganese steel has good toughness, good workmanship and low price. Its main characteristic is that the surface layer will produce work hardening rapidly under the action of large impact ｏｒ contact stress. Its work hardening index is 5-7 times higher than other materials, and its wear resistance is greatly improved. However, the high manganese steel hammer has a high requirement for the overall performance of crusher. If the physical impact force is not enough ｏｒ the contact stress is small in actual work, the surface can not be hardened rapidly, thus the wear resistance can not be exerted. Therefore, the equipment should be selected according to the actual parameters before use. If necessary, the equipment can be reformed to maximize economic benefits.
High manganese steel has good plasticity and impact toughness. Hardened layer is formed on the surface under external impact. After the hardened layer is worn out, new surface layer appears and continues to be hardened. Therefore, high manganese steel castings have high surface wear resistance, and the inner part still retains the original mechanical properties. Because of the above characteristics of high manganese steel, there is no wear-resistant material in the world that can completely ｒｅｐｌａｃｅ high manganese steel.
High Chromium Hammer Head Material
High chromium cast iron is a kind of wear-resistant material with excellent wear resistance, but its toughness is low and brittle fracture is easy to occur. In order to make the hammer of high chromium cast iron run safely, Dongchen Industry has developed a composite hammer based on this. The hammer head of high chromium cast-in-place is made of high manganese steel ｏｒ low alloy steel, ｏｒ the working part of the hammer head is made of high chromium cast iron, and the hammer handle is made of carbon steel. The hammer head has high hardness and wear resistance, while the hammer handle has high toughness. The advantages of the two materials can be fully utilized to overcome the shortcomings of the single material and meet the requirements of service performance. It is reported that the service life of cement clinker crushing in cement industry is more than two times longer than that of high manganese steel hammer head.
Material of High Chromium Cast Iron Hammer Head
High chromium cast iron is mainly alloy structural steel containing chromium, molybdenum and ot her elements. It has high hardness, good toughness and high service life of hammer head. Under the same working conditions, its service life is at least 1 times longer than that of high manganese steel hammers. However, its manufacturing process is complex, the process requirements are strict, and the quenching and tempering heat treatment of hammer head is very important. After quenching and tempering heat treatment, not only the overall tensile strength of hammer head should be above 850 MPa, but also the plasticity and toughness should be considerable. At the same time, it is strictly forbidden for iron blocks to enter the crusher, and it is required that there are two-stage iron absorption devices in the front of feeding material. This will also become a good choice for many users. An important consideration of quality.
High chromium composite hammer has higher hardness and impact toughness than high manganese steel hammer.
The high chromium compound hammer head adopts pressure casting technology of vacuum double smelting, out-of-furnace refining and directional solidification. High-quality reinforced ultra-high manganese steel is used as the base material of hammer head, and multi-element alloys are compounded at the wear parts of hammer head. The material of hammer head is mainly chromium, nickel and molybdenum, and alloying elements such as vanadium, titanium, boron and rare earth are added. The grain is refined after modification during smelting, the density is high, the hammer can withstand large impact ｌｏａｄ, and the hardness is up to HRC62. The hammer handle is made of alloy steel. The impact toughness is good, and the bimetal hydrothermal composite production process is used to combine the two organically, so that the hammer can meet the requirements of toughness and wear resistance at the same time. It has high anti-wear effect and reliable safety performance.
Which is the wear resistance of high chromium hammer head and high manganese steel hammer head? Hammer head part needs good wear resistance and handle part needs sufficient toughness. Usually, alloy steel hammer head, high manganese steel hammer head, cast steel and high chromium cast iron bimetal composite material are used to form one time by forging ｏｒ forging method, and the corresponding heat treatment process is more economical. The hammer head of high chromium cast iron is a little more expensive than that of forging, but because of its high wear resistance, it saves a lot of time to change the hammer head, but its cost performance is higher than that of forging. The high manganese steel hammer has good toughness, but its wear resistance is not as good as that of high chromium hammer, but it should break the harder material properly. The hardness of high chromium is higher but the toughness is poor. It is easy to break the harder material, but it is better to break the smaller material and the softer material.