The position of the casting in the mold during casting affects the quality of the precision casting, the dimensional accuracy, and the difficulty of the molding process. The selection principle of the pouring position: 1. The important processing surface of the precision casting or the main processing surface is facing down or on the side: when pouring, the gas, molten slag and the sand in the mold will float upward, which may cause pores and slag inclusions in the upper part of the casting. Defects such as blisters, and the possibility of defects in the lower part of the casting, the organization is denser. a. The casting position of the machine bed should face the rail face down to ensure the quality of the important working face. The quality of the circumferential surface is relatively high. The vertical casting scheme is adopted to make the circumferential surface on the side to ensure uniform quality. 2. The casting of the precision casting is directed downward or obliquely: due to the strong thermal radiation of the molten metal on the upper part of the casting, the top sand-shaped expansion arches are even cracked, causing sand, blisters, etc. in the large plane. defect. The large flat face down or the oblique casting method can avoid large-scale production casting defects. 3. The thin wall of the precision casting is facing down, sideways or inclined: in order to prevent cold partitioning of the thin part of the casting and no defects, the thin wall with a larger area should be placed in the lower part of the casting or placed on the side wall or Tilt position. 4. The thickness of the precision casting should be placed on the top or on the side of the parting surface. The main purpose is to facilitate the feeding of the riser in the thick part. Stainless steel casting is to use a suitable investment material to make the investment mold. Repeat the coating of the refractory coating, refractory sand, hardening and drying on the investment mold, and then melt the internal investment material; then, the strength is sufficient by roasting. A shell type without residual investment material for casting molten metal to obtain a high-precision casting. The lost wax casting process is adopted, the investment material is paraffin and stearic acid, the wax mold making and shell making process adopts an automatic assembly line, and the coating uses water glass as a binder. The precision casting has a high production efficiency and a small footprint. For the middle part, various high-pressure molding machine production lines and air-punching molding lines can be selected to meet the requirements of fast and high-precision molding production lines. Selection: high-efficiency core making methods such as cold core box, hot core box and shell core. Medium-sized large castings can be considered for the application of resin self-hardening sand molding and core making. One of the more common problems encountered in the process of precision casting is that there are pores inside the product. For some parts with higher requirements, the pores inside are not allowed inside, so the silica sol is precision cast in processing. It is necessary to prevent stomata. The choice of precision castings in terms of their methods and methods should be considered, mainly for the adaptability of the method, and whether advanced modeling or core-making technology can be used to improve work efficiency through equipment. For the casting of ferrous metals, it can be precision cast. Moreover, depending on the characteristics of the casting, it can be used to produce some thin-walled castings.

1. Does precision casting have to be manufactured by precision casting? Can it be used to produce thin-walled castings? The manufacturing process of precision castings is precision casting, which is without a doubt. However, this process can also be used for the production of thin-walled castings, in which the outer casing of the mold needs to be preheated at a high temperature, and the solidification speed of the metal during the casting process is very slow. It is therefore suitable for the production of thin-walled castings. 2. Does the precision casting need heat treatment? Can stainless steel be used as casting raw material? Whether the precision casting needs heat treatment depends on the actual conditions and specific requirements of the casting. If you want to further improve the performance of the casting, you can achieve this by heat treatment. However, it is necessary to rationally select the materials and select the appropriate process to achieve good results. As a good material, stainless steel can be cast by precision casting. 3. What should I pay attention to if I produce such castings in large quantities? Classification of castings? If the production of precision castings is mass-produced, care should be taken to adopt appropriate, advanced styling and coring methods to increase work efficiency and obtain high quality products. The classification of castings is generally horizontal casting and vertical casting.

Main use of silicon carbide: for 3-12 inch single crystal silicon, polysilicon, potassium arsenide, quartz crystal and other wire cutting. Solar photovoltaic industry, semiconductor industry, piezoelectric crystal industry engineering processing materials. Used in semiconductors, lightning rods, circuit components, high temperature applications, UV detectors, structural materials, astronomy, disc brakes, clutches, diesel particulate filters, filament pyrometers, ceramic membranes, cutting tools, heating elements, nuclear fuel , jewelry, steel, protective gear, catalyst carrier and other fields. Which kind of mill equipment is used to process silicon carbide? We know that silicon carbide is a kind of deoxidizer or a very good high temperature resistant material, which is widely used in industrial production. Silicon carbide is made by using quartz sand, petroleum coke (or coal char), and wood chips as raw materials through high-temperature smelting in an electric resistance furnace. Silicon carbide is also a rare mineral in nature, Moissanite. Silicon carbide is also known as carbon silica. After being ground by a vertical roller mill, silicon carbide is used in many applications, namely: functional ceramics, advanced refractory materials, abrasives and metallurgical raw materials. At present, the raw material of silicon carbide can be supplied in large quantities, which cannot be regarded as high-tech products, and the technical content is extremely high. The application of nano-sized silicon carbide powder is unlikely to form economies of scale in a short time. (1) As an abrasive, it can be used as a grinding tool, such as grinding wheel, oil stone, grinding head, sand tile, etc. (2) As a metallurgical deoxidizer and high temperature resistant material. (3) A high-purity single crystal which can be used for manufacturing semiconductors and manufacturing silicon carbide fibers. Then, what kind of vertical grinding and grinding equipment is used for silicon carbide processing? The processing technology of raw materials directly affects the quality of silicon carbide products. Therefore, it is necessary to select suitable vertical grinding equipment in raw material processing. In general, when processing quartz sand, it is necessary to use a special high-pressure mill equipment for grinding; petroleum coke and wood chips can be processed by ultra-fine mill or ordinary Raymond mill. However, the same equipment can be used to process the three raw materials, namely the new vertical roller mill. The equipment has strong processing capability, stable performance, and the product granularity can be adjusted arbitrarily to meet different needs of users. It can be seen that when processing silicon carbide raw materials, it is a good choice to choose a vertical roller mill. The emergence of vertical roller mill has also greatly promoted the development of the silicon carbide processing industry and made an important contribution to China's industrial production.

DeZe stainless steel casting Co., Ltd. is a professional manufacturer of centrifugal casting tubes and stainless steel castings. After years of development and research, its quality has been affirmed by many customers. Due to the special working environment of stainless steel castings, the processing accessories are In the process, we must also put good quality on this level. Let's take a look at the company's safety production standards in the production process. (1) Safety of materials for the production of stainless steel castings. In order to reduce the cost in the production process, many manufacturers have reduced the quality requirements of materials, but castings produced by inferior materials generally have a short service life and are prone to various problems during use. The pass rate is relatively low, so the selection of high quality materials is a prerequisite for processing. (2) The radioactive inspection operation should be carried out in accordance with the correct process during the production process. (3) Pay attention to the safety regulations of castings and the relevant safety technologies when manufacturing. (4) After the completion, it is necessary to do the relevant inspection work. https://janspijkers.nl/sitemap.xml

There are two main types of dewaxing casting methods: the Solid Mold method and the Ceramic Shell Mold method, the latter being the former method of improvement. The shell mold method until the wax type is produced in the same way as the solid mold, but after one damp and sand (or floating sand), the mold-free operation is not carried out, but the dipping and sanding are repeated several times. Until the predetermined shell thickness is obtained. Drying, heating, melting and waxing, high temperature heating and casting, this method is widely used by the current dewaxing precision casting industry, because it has the following advantages: (1) The process can be partially automated to save manpower and increase production rate (2) Lower production costs (3) The ceramic shell mold is thin, and the casting rate of the casting after casting is high and uniform, so the mechanical properties are better. (4) better dimensional stability A precision casting mold for stainless steel precision casting obtains a casting method for precision castings. http://janspijkers.nl/sitemap.xml http://stadionwonen.nl/sitemap.xml http://sannesverhaal.nl/sitemap.xml

Raymond mill is one of the common equipments in mining machinery. What kind of equipment can not withstand long-term damage, there will always be some faults in long-term use, and don't be afraid of problems. Finding a solution is the key. Next, SBM Heavy Industry's professional technicians will explain the problem of excessive temperature of Raymond mill. Improper use of Raymond mill equipment, there will be a corresponding increase in temperature, which is very unfavorable for our production and processing, because the increase in temperature will hinder our production efficiency, so that our maintenance times increase When the Raymond mill is overheated, we need to find the root cause of the temperature rise. 1. The grinding roller device should be filled in time according to the regulations, and cleaned regularly to replace the oil seal. 2, according to the actual situation of Raymond mill adjustment, such as appropriate adjustment of the ventilation of the grinding chamber, open the ventilation duct, so that the airflow and outdoor airflow in the Raymond grinding chamber can convect, from avoiding the temperature of the Raymond mill chamber is too high. 3, fan heating is most likely due to high wind pressure, sometimes we will unconsciously encounter the fan equipment in the production, so that the wind pressure of the fan changes to cause the motor to heat. This also reminds us not to arbitrarily change the equipment in production. 4. The bearings of the grinding roller grinding ring should be refueled regularly. 5. Many equipments have some problems in terms of quality. When purchasing equipment, we need to conduct detailed inspections, consultations, and shop around to decide to buy. A good product can better provide overall work efficiency. SBM heavy-duty mill manufacturers have professional engineers, can tailor the grinding production line according to customer needs, high-pressure mill, ultra-fine mill, limestone grinding equipment, calcium carbonate mill, Raymond mill , industrial mill, bentonite mill equipment

High-purity graphite has attracted wide attention because of its excellent performance. It is an ideal inorganic non-metallic material, which is widely used in production. High-purity graphite is very used and is used in many fields. It can be used. Used in advanced refractory materials and military, paint, light industry, chemical fertilizer industry catalyst additives, etc., deep processing of high-purity graphite, can also produce graphite sealing materials, composite materials, graphite emulsion, graphite anti-wear additives and other high-tech products, Used as an important non-metallic mineral raw material in the industrial sector. High-purity graphite is the preferred product in production due to its excellent performance. As a high-quality milling equipment in the field of graphite processing, the vertical roller mill made by SBM is a high-quality equipment specially designed for the status of graphite processing. It is of great help and promotion for improving the efficiency of graphite reprocessing and creating greater value. . vertical roller mill grinding machine is a high-quality equipment specially designed for non-metal scale powder making of SBM heavy machine. It has high-quality, high-efficiency, environmentally-friendly production, energy saving and other high-quality features. It is very popular in the field of high-purity graphite powder processing. As a professional manufacturer of vertical roller mills, SBM heavy machine is customer-centered. According to the price and selection configuration of high-purity graphite vertical roller mills customized by each customer site, it is more scientific and reasonable. A must-have device for improving graphite processing efficiency. SBM heavy machine vertical roller mill is an advanced equipment that learns to introduce more advanced milling technology at home and abroad. After years of painstaking research and production, it has successfully broken through the traditional mill's low output, high energy consumption and maintenance. High cost and other problems, the ability to adapt to materials is very strong, can produce a variety of production capacity for different materials, to meet the production needs of graphite powder in different industries, and therefore is the ideal equipment in the field of graphite processing.

With the improvement of the level of science and technology, the comprehensive utilization value of coal gangue has been greatly improved and developed. As a vertical roller mill grinding machine focusing on the field of coal gangue milling, SBM heavy machine is in line with the development needs of the market, and continuously carries out technological innovation and Innovative, high-yield and high-efficiency gangue vertical roller mills have stronger price and selection characteristics, higher powder extraction rate, not only large capacity, but also energy saving and emission reduction. It is a powerful weapon to enhance the utilization value of coal gangue resources. 1. Application status of coal gangue According to authoritative data, in 2013, the total production of coal gangue in China was close to 750 million tons, and the comprehensive utilization was 480 million tons, accounting for 64% of the total annual output, of which 150 million tons of coal gangue were used for power generation, accounting for 32% of the total comprehensive utilization. %; the production and utilization of building materials is 56 million tons, accounting for 12% of the total comprehensive utilization; the amount of coal gangue used for land reclamation, filling mine goaf and backfill subsidence area is about 260 million tons, accounting for 56% of the comprehensive utilization. At present, the technologies that have been developed are more advanced and have good environmental-economic benefits: energy utilization of coal gangue, power generation and utilization of building materials.

2. Analysis of application methods of coal gangue For coal gangue with high carbon content, ie carbon content ≥ 20% (heat value is 6270 ~ 12550kJ / kg), it can be directly used as fuel for fluidized bed boiler for coal gangue power generation. In the field of building materials, the performance of coal gangue sintered self-insulating block as an energy-saving green product can meet the requirements of national building energy saving of 65%. Coal gangue can produce ceramsite light aggregate, can produce cement, can produce chemical products, can be used to improve soil and promote surrounding ecological restoration. With the development of coal gangue comprehensive utilization technology, the available way of coal gangue will be continuously Expansion and extension, as an advanced milling tool for coal gangue, SBM heavy-duty coal gangue vertical roller mill grinding machine will also adapt to the development needs of the industry and make due contributions to the utilization value of coal gangue resource utilization. 3. The value of coal gangue vertical roller mill grinding machine SBM heavy-duty coal gangue vertical roller mill grinding machine is a high-quality equipment successfully manufactured for the resource utilization of the industry. It integrates drying, grinding, grading and conveying. The structure is compact and the floor space is small. It is only a ball mill. 50%, can be set up in the open air, low construction cost, high degree of automation, equipped with automatic control system, can realize remote control, easy operation, system whole sealing, full negative pressure operation, no dust overflow, basically can achieve dust-free workshop, The preferred equipment for coal gangue to realize resource utilization and processing.

Raymond mills require assembly because they have many components, so Raymond mill manufacturers often need to send technicians to the site to guide installation and commissioning. There are many places to note in this process. Otherwise, it is not suitable for installing the machine, or it is caused by one or other problems during the installation of the machine. Therefore, it is important to ensure this in order to assemble the Raymond mill in place. It is often necessary to pay attention to the fact that the connection of the pipe must be completely sealed. When making the basis, the dimensional verification must be strict and the dimensions may not be correct when the host is installed. In addition, when testing the Raymond mill, you must first leave the machine idle for about 10 minutes, then tighten the internal screws and start adding materials for grinding. Hardening of the ground is a very important task, especially for the mainframe that needs to be pitted. This position should not be underestimated. This is because this part is related to the normal operation and service life of the main engine. Intensive work must be done in the right place. Raymond mills above 3216 are usually equipped with reducers. Some customers want to place the reducer on the ground. It may be relatively easy to fix, but it also has some hidden dangers, namely where the machine is. The height is relatively high and it is cumbersome to operate. This base is strong, otherwise there is a danger of collapse. After all, Raymond machines weigh more than ten tons. What are the main features of the Raymond mill? If you need to use a twin-shaft crusher when shredding materials, then we must know the characteristics of the equipment, what are its main features? It must consist of two relatively rotating axes. In addition, the size of the intermediate shearing knife is a size that can be selected according to the material properties of the different materials. If the material of the chopped material is relatively hard. Then we should choose the knife to be slightly thicker and slightly larger in diameter so that it may be more durable when in use. Of the many different types of shredders, the relatively stable and durable shredder is of course biaxial.

SBM is committed to the powder industry's ultrafine mill machinery and equipment more than 10 years of innovative and substantial development. In the market there are many loyal customers and considerable sales. High-quality ultra-fine grinding to customers with high efficiency, high yield, high yield of production, many processing enterprises are the only choice. In the production of ultra-fine grinding, after the bulk material is crushed to the required particle size of about 1cm by jaw crusher, the material is sent to the storage hopper by the hoist, and then the material is evenly and continuously sent to the main mill room for grinding by the electromagnetic vibration feeder. The grinded materials are sent to the powder feeder for classification by the air flow of the fan. Under the action of the impeller of the powder feeder, the materials that do not meet the fineness requirements fall into the grinding chamber for re-grinding, and the materials that meet the fineness requirements enter the cyclone powder collector through the air flow, are separated and collected, and are discharged into the finished powder through the discharge device. If the ground material contains a certain amount of water, The amount of heat that is generated when you grind, the gas in the mill chamber evaporates and expands to change the gas flow rate of the system, In addition, the problem of sealing at the junction of the feed port and the pipes causes the air flow in the system to lose balance. For this reason, the ultra-fine powder mill guides the excess gas into the bag filter through the exhaust pipe valve arranged at the air outlet of the fan, and discharges the excess gas after being purified, so as to realize the environmental protection production while adjusting the air flow balance of the system. SBM adopts high-quality materials and design principles for the processing of wear-prone parts such as grinding rolls and rings. In the work, the grinding roller of the ultrafine mill is not in contact with the grinding disc, and has less wear and long service life. The grinding roller can be turned out to the outside of the casing for inspection and repair, and the roller sleeve can be replaced, the lining plate is convenient and fast, and the shutdown loss can be reduced. Single lubricating station is used for roller lubrication, and double pump-mdash is used for single roller circuit. The mode of pumping and working at the same time not only makes the roller bearings lubricated and cooled, but also avoids the leakage of oil stored in the roller bearing chamber. What are you hesitating about with such material processing equipment? Ultra-fine grinding is worth more than that. When the right equipment is selected for you, SBM will tailor you to the quality of the production program, ultra-fine grinding will also shine.