16. How can the surface of hammer steel be hard and wear resistant?

Technical field: It specifically belongs to a wear-resistant hammer head and its manufacturing method.

Background technology: The hammer crusher uses the wear-resistant hammer head as a crushing tool, which is a common equipment in the mining industry, and the surface of the wear-resistant hammer will bear a great impact and the extrusion force of the material during use, which will cause great wear and tear and reduce the service life. Therefore, the wear-resistant hammer head needs to have strong hardness and good impact toughness.

However, if the hardness and impact toughness of the entire wear-resistant hammer are improved, the production cost will be greatly increased, so only increasing the hardness and impact toughness of the surface part of the wear-resistant hammer is the best solution. Technical implementation elements: the object of the present invention is to provide a wear-resistant hammer head and its manufacturing method to overcome the deficiencies of the prior art.

In order to solve the above-mentioned problem, the technical scheme adopted by the present invention is as follows: a wear-resistant hammer head comprises a hammer head and a hammer handle connected with the hammer head, and the hammer head is composed of the following components according to weight percentage: c:

cr：12-18％，mn：，si：

al：，b：，mo：

cu：，ti：，mg：

p<, s<, and the margin is Fe; A manufacturing method for a wear-resistant hammer head comprises the following steps: (1) heating the hammer handle to 900-1150 and fixing it in a casting mold; (2) According to the weight percentage of each component of the hammer head, the hammer raw materials are smelted in the induction furnace, the composition is adjusted after melting, and the base metal liquid is obtained after slag scraping, and the melting temperature is 1590-1615; (3) the molten metal in (2) is poured into the casting mold in (1), and the pouring temperature is 1370-1390, which is cooled to below 60 by programming, and the mold shell is removed to obtain a hammer head; (4) After heating the hammer head to 960, keep it warm for 6 hours, and use quenching oil for quenching; (5) Heat the hammer head in (4) to 240 and then keep it warm for 3 hours, and naturally cool it to room temperature to obtain a wear-resistant hammer. Further, the hammerhead raw material comprises:

Ferrochrome, high-chromium cast iron, carbon steel, ferromanganese, toner and a small amount of rare metal ferroalloys.

To make this vertical steel surface harder and wear-resistant, you need to add some special metals, such as copper and zinc, so that the effect can be achieved.

If you have hardness and resistance on the surface, you can add some composite carbon to enhance the hardness.

If you want to compare the hardness and wear resistance of the surface of this cylinder, the main thing is that it must be thicker when making it, so that it can be.

16. The surface of hammer steel is hard and wear-resistant. It can make him have India, and if it is wear-resistant, it can increase its toughness, and it can be Indian and wear-resistant, and it can add a layer of material to its surface.

16 How about the surface of the vertical steel? It's hard, and it's wear-resistant, and I think I can lower his temperature a little bit, and he will have hardness, and if the temperature is too high, it will be softer.

If the steel hammer wants to have a relatively high hardness, it needs to choose a very good steel, and you can add some elements such as manganese to increase the hardness of the steel

Try the following:

Monolithic casting method.

The integral casting method is also known as the integrated casting method, after casting the mold, a hammer head material is smelted and poured, and the assorted hammer head is obtained after solidification, and the hammer head of high manganese steel and alloy steel can be produced by the integrated casting method. In actual production, in order to improve productivity, the one-piece casting method can use one box of multiple pieces or string casting method to produce hammerheads.

16. How to have hardness and wear resistance on the surface of the hammer cylinder, about the question asked, it can be improved by surface coating.

16 The surface of the vertical post, which itself has the hardness of the line of massage, is sapphire glass, which is very wear-resistant.

If the surface of the six vertebrae has India, and it is wear-resistant, this description is normal, which means that his steel grade is particularly good, and his entire wear resistance is relatively strong.

This needs to be polished and re-refined, so that it will have better wear resistance and hardness.

16 How does the surface of hammer steel have India and is tired, which is separate from the composition in it, which has the composition of marble.

Because he is a diamond first-class diamond, it is wear-resistant, pressure-resistant, and blow-resistant.

16. How to have hardness and wear-resistant on the surface of hammer steel, consult the wall master.

1. How hard and wear-resistant tires are alloyed on the surface of the vertical post.

In order to increase the hardness of the mold surface, the method of surface nitriding can be used to increase the hardness and improve the wear resistance.

ASSAB88 or high-speed steel is a steel with high hardness and high wear resistance.

assab88：

Steel characteristics ASSAB88 die steel is a chromium, molybdenum, vanadium alloy tool steel, which is characterized by:

High abrasion resistance. Good collapse resistance.

High compressive strength.

High hardness (>60HRC) after high temperature tempering

Good hardenability. Good dimensional stability after hardening.

Good temper resistance and softening.

Good wire cutting performance.

Good machinability and grindability.

Good surface treatment characteristics.

Chemical composition (%)

High-speed steel (HSS) is a tool steel with high hardness, high wear resistance and high heat resistance, also known as high-speed tool steel or edge steel, commonly known as white steel. HSS is Taylor and M. in the United StatesWhite created it in 1898.

High-speed steel has good process performance, strength and toughness, so it is mainly used to manufacture complex thin edge and impact-resistant metal cutting tools, and can also be used to manufacture high-temperature bearings and cold extrusion dies. In addition to the high-speed steel produced by the smelting method, powder metallurgy high-speed steel appeared after the 60s of the 20th century, which has the advantage of avoiding the reduction of mechanical properties and heat treatment deformation caused by carbide segregation caused by smelting production.

It depends on what occasion the landlord needs to use it. If it is a molded part, there are many options that can be used, such as H13 (DIN2344

HRC50-52 after heat treatment), S-Star

A (HRC50-52 after heat treatment), etc.

If it is a wear-resistant block, DIN can be used

2510 (HRC54-56 after heat treatment).

No. 45 steel is quenched and before tempering, and the hardness is greater than HRC55 (up to HRC62) is qualified. The highest hardness for practical application is HRC55 (high-frequency quenched HRC58). 2.

No. 45 steel should not be subjected to the heat treatment process of carburizing and quenching. The hardness of No. 45 steel quenching and tempering parts after quenching should reach HRC56 59, and the possibility of large cross-section is lower, but not lower than HRC48, otherwise, it means that the workpiece has not been completely quenched, and there may be soxenite or even ferrite structure in the structure, which is still retained in the matrix through tempering and excavation, and the purpose of quenching and tempering cannot be achieved. The high temperature tempering of No. 45 steel after quenching, the heating temperature is usually 560 600, and the hardness requirement is HRC22 34.

Because the purpose of quenching and tempering is to obtain comprehensive mechanical properties, the hardness range is relatively wide. However, if the drawing has hardness requirements, the tempering temperature should be adjusted according to the requirements of the drawings to ensure the hardness. For example, some shaft parts require high strength and high hardness; However, some gears and shaft parts with keyways have to be milled and inserted after quenching and tempering, and the hardness requirements are lower.

Regarding the tempering and holding time, depending on the hardness requirements and the size of the workpiece, we believe that the hardness after tempering depends on the tempering and tempering temperature, which has little to do with the tempering time, but it must be reversed, and the tempering and holding time of the workpiece is always more than one hour. Wear-resistant cast steel is wear-resistant.

It is not hard at first, but the material has hardness, and after use, the material is surface hardened (the surface reaches HRC50-55), but the original properties are maintained in the material, so it has the performance of wear resistance, impact resistance but no falling off when used.

16 manganese steel plate hardness is 45 -50hrc.

Manganese steel is a kind of high-strength steel, which is mainly used to withstand severe working conditions such as impact, extrusion, and material wear.

Manganese steel is a kind of high-strength anti-wear steel, which is mainly used to withstand severe working conditions such as impact, extrusion, and material wear. There are three types of wear: frictional wear in which the surfaces of metal components are in contact with each other and move; Other metallic or non-metallic materials combat the abrasive wear on the metal surface and the erosion and wear caused by the contact of flowing gases or liquids with the metal.

The wear resistance of wear-resistant steel depends on the material itself, while the wear-resistant steel shows different wear resistance under different working conditions, and the material itself and the working conditions can determine its wear resistance.

15Mn without heat treatment has a hardness of 163HBS, which is about equal to 84HRB or a tensile strength of 410MPa.

This thing is mild steel, and it is up to 45 -50hrc. after quenchingAnd in actual use, this thing is generally not quenched. Generally, it is used in the state of normalizing or hot riding, and the hardness is small.

It is estimated to be around 20-25HRC or 300HBS. The new grade is Q345.

The second floor is right, but Q345 is supplied according to mechanical properties, which belongs to Class A. 16MN is supplied according to mechanical properties and chemical composition and is classified as Class B.

Surface treatment: physical and chemical treatment methods, such as carburizing or adding plating as mentioned above. The hardness of many electroplating coatings is very high.

The surface is carburized, but similar to A3 and other commonly used steel plates, the cost and process should be considered, and the material cannot be changed.

The hardness measurement of steel is commonly used in chromium hardness testers, which are available in mechanical pointer type and cursor display, both of which are additive codes to achieve pressurization. Now there is another portable digital display. Abrasion resistance There is a special test equipment, the workpiece is repeated to test the wear resistance, its time and number of records for easy inspection.

After the strip is treated by thermal spraying process, its life is extended, which can shorten the frequency of replacing the strip of the oil press and improve the production efficiency of the plant.

Beijing Guben Technology Co., Ltd. has long been concerned about the mechanical wear and tear of the grain and oil machinery industry, and has accumulated rich R&D and practical experience in the fields of screw surfacing welding, snail surfacing welding, screw surfacing welding, and squeezing strip spraying, and related products and technical services have been applied in many domestic grain and oil machinery enterprises.