In recent years, with the rapid development of domestic modernization, the rapid development of construction projects, such as buildings, highways, bridges and other construction projects in the city, has been developed, and a large number of construction wastes are also produced. How to deal with these wastes and how to recycle these wastes has become a problem to be solved urgently. It can be used in time to smash these wastes and use it as building material two times in time, which has greatly promoted the rapid development of the mobile crushing station technology.
Structure and working principle of hydraulic system of mobile crushing station
The whole hydraulic system consists of the following parts: the hydraulic pump driven crushing mechanism supporting system, the crawler walking chassis support system, the conveying support system (vibration feeder, main conveyer belt conveyor, auxiliary conveyer belt conveyor, iron remover), hydraulic cylinder driven supporting system, hydraulic pump driving oil cooling system and auxiliary branch system Unification.
The working mechanism of mobile crushing station alternates with other institutions. Its hydraulic system control principle is:
1. Moving the crushing station, the displacement of the closed variable pump of the broken mechanism is adjusted to zero, and it stops working. The vibration feeder, the main conveyer belt conveyor, the auxiliary conveyer, the iron remover, the load sensing valve of the hydraulic cylinder are in the middle function, and the oil supply is stopped.
2, the mobile crushing station stops walking. When the rest of the organization works, the load sensing valve piece of the walking mechanism is in the middle position and stops supplying oil to the system.
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Design of hydraulic control system for mobile crushing station
The design of the full hydraulic mobile crushing station adopts the modular design method, which is mainly divided into the starting module, the system initialization module, the starting / maintenance module, the breakup / walking module, the automatic / manual module and the technical module. Automatic modules include automatic start mode and automatic stop mode; manual modules include manual start mode, manual stop mode, crawler walking mode, setting and maintenance mode.
1. Under the automatic start mode, the controller automatically completes the start operation of the iron remover, the main and vice belt conveyor, the crusher and the miner, as well as the telescopic operation of the hydraulic cylinders, and sends the feedback information to the human-computer interface in the automatic starting process.
2. Under the automatic stop mode, the controller automatically completes the stop operation of the iron remover, the main auxiliary belt conveyor, the crusher and the miner, as well as the telescopic operation of the hydraulic cylinders, and sends the feedback information to the man-machine interface in the automatic stop process.
3. Under the walking mode, the controller performs the crawler walking instruction according to the man-machine interface, and completes the operation of the left track and back, the right track and back.
Red Star machine manufacturers introduce advanced technology abroad to transform the hydraulic system of mobile crushing station, which has high reliability, good stability, strong anti-interference ability, can adapt to bad working conditions, and can create greater value at smaller cost. Henan Hongxing Mining Machinery Co., Ltd. is the largest R & D and production base of mining equipment in China. The mobile crushing station is our company’s signboard equipment.
Structure and design of hydraulic system for mobile crushing station
All the surface treatment of glass beads
Here is the main discussion of the metal surface of the sand blasting process glass sand processing work, sand spray process products, features, color and specifications; following the following Han Tong Industrial Co., Ltd. to chat:
Abrasive blasting technology is widely used in finishing or metal surface strengthening process, a unique abrasive, mainly used for sandblasting equipment.
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Product use:
The surface of the spring is shot peening parts to remove the stress to increase the fatigue strength, to increase the fatigue strength, to reduce friction and wear, to remove sand and rust, to remove paint, to remove carbon, to remove the tool marks, to treat anodizing and before electroplating, to increase the adhesion area, to clean the welding path and to the surface scratch of the stainless steel workpiece. Besides the aesthetic processing, the cleaning and rust removal of the wire cutting die, the removal of the mold remover from the rubber mold, etc.
Product characteristics:
The chemical properties of the glass beads are not available. In the process of use, no iron or other harmful substances are retained on the surface of the parts, and the surrounding environment will not be adversely affected.
Product color: white transparent color
Product specification: 25kg/ bag
A few things that a successful businessman must do every day
Products, lack of sales, the Internet has become the only way we start.
If we are not the Internet, we will not be able to get home. We are making products, but for whom? Before the big company work too easy Amateur Open Taobao store, then why do we not also put our products on the network sales, so the cost is greatly reduced, think of the second days I found the network platform to find the same day, Ali registered the good faith, has been on the online transaction so to now all my guests All households are online, and some online customers will bring customers who are not Internet users in their area. But slowly, there are some bottlenecks.
The first thing: close attention to the change of data
The word “big data” is very popular now. In fact, the small data in Ali is also important. The first thing to go to work every day is to go to Ali Wangwang, click on the “daily focus” that pops up automatically, and see the “seller’s growth” plate, which has a “business staff”. I will arrange a day’s work based on the data provided by this plate so that I can get the remedy, because the data is the most true response to your website.
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From this data perspective, some people may think that such a display is not high, 5A business does not seem to be difficult. Here we need to explain, because our company mainly produces pressure riveting screws, car car charging hardware, plastic screws, machine meter fasteners and other kinds of electronic products. And the customers of search electronic products are very strong in terms of purpose, and the probability of transaction is relatively high. Yesterday, clicking 94 times showed that 94 people visited our shop.
Second things: a new product on a daily basis
Uploading a new product every day will bring a lot of traffic to the store. This is not the secret, the emphasis on insistence, if you and I, insist on adding new products to the shop every day, the flow of shops will gradually increase, insist on continuous optimization and promotion, I believe you will see the return soon. Sometimes, what you lack is the insistence of a new product every day.
The third thing: insist on optimizing the title of the product
In addition to clearly expressing product attributes, I also suggest that you should think more about the key words they may search for when the title is optimized. And some words, such as “good quality” “XX”, “good back” and “good word of mouth”, don’t have much to write, because customers rarely search for them. Too much useless keyword accumulation will only take up space, and the gains will not pay.
At the same time, you can also compare your key words with your peers and combine your own characteristics.
Diamond is the hardest, why can it be processed?
Diamond is the hardest material found so far. If the tool material must be hardened to the machined part, it is a necessary condition for the cutting process, so the diamond can not be machined. But if we expand our minds. Do not use solid cutting tools to process, so the problem of diamond processing may be solved.
In recent years, many special processing methods have been created in the world, such as electric spark, electron beam, ultrasonic wave and laser processing. These machining methods are not processed by solid cutting tools, so the hardness of machined parts is not limited. For example, the principle of laser drilling is to focus the high-energy laser beam on the surface of the component, and this small area produces extremely high temperature. As a result, the surface material is rapidly melted, the well is vaporized rapidly, and holes are formed on the surface of the parts.
Therefore, most materials, including diamond, can be perforated by laser. Therefore, the application of laser drilling is becoming more and more extensive. For example, the spray head used in the chemical fiber industry, the fuel nozzle of the rocket, the cemented carbide or the diamond, and the gemstone bearings in the table all have to be processed with laser to produce small holes on very hard materials.
How the polishing wheel is made by classification of polished materials
hat materials are used for polishing? Polishing wheel, polishing belt, cloth wheel, polishing wax and other materials, polishing is the polishing method of smoothing surface by cutting, plastic deformation of material surface and removing the bump after polishing. Generally, oil stone strip, wool wheel, sand paper, etc. are mainly used by manual operation, special parts such as the surface of rotary body, and auxiliary tools such as turntable can be used. The method of ultra precision polishing can be adopted for high surface quality. A number of polishing wheels are pressed together, and each polishing wheel is coated with a polished oil layer on the outer surface. So in the process of polishing, there is no need to add another oil. And because of its simple structure, it is very popular. So what does Han Tong lapping tell you about the classification and manufacture of the polishing wheel?
Polishing material polishing wheel material and polished wheel is different, it is made of a variety of elastic better cotton, fine felt, silk, wool wheel and other kinds of made. And in order to save cotton wool fabrics commonly used special paper made of cloth replacement is widely used. There are many classifications in the manufacture of polishing wheels. The hardness is determined by the distance between stitches. The smaller the distance, the higher the hardness. Therefore, in order to make the polishing wheel more flexible, we should pay attention to the distance between the stitch and the wheel edge.
The precision grinding should be removed from the coarse sand eye, and the polishing time should be sufficient. When the large workpiece is polished by Shenzhen Han Tong industry, the polishing material is also carried out with a special air cooling device. The polishing wheel can be divided into three ways. The first is a non sutured whole cloth wheel. It is made of fine cotton cloth, suitable for polishing complex workpiece, or for fine polishing of small workpieces. The second is suture. Most of them are made of coarse cloth, non-woven fabric and thin flat cloth. The stitches of them are concentric circular spiral type and direct radiation, which are suitable for polishing various coatings and simple work. Third is an air – cooled cloth wheel. The 45 degree angle line method is adopted, and the circular ruffle is provided with metal discs in the middle, which has the characteristics of ventilation and heat dissipation, and is suitable for polishing large workpieces.
30 year experience expert: process and points for attention in sandblasting process
30 years of experience experts: sand blasting process and the main points of attention; sandblasting Technology: sandblasting and shot blasting which is better? Today, the professional team of Han Tong Industrial Co., Ltd. 30 years professional team research and development experts to say “the key points of sand blasting processing, sand blasting processing and shot processing which is better”, let you have more understanding of the industry in addition to the prior understanding of the shot processing.
The main points of the sand blasting process are that the first sand blasting equipment is as close to the work as possible to reduce the length and pressure loss of the pipeline, avoid excessive pipe wear and facilitate the construction personnel to connect with each other; the sand hose is striving straight to reduce the pressure loss and the concentrated wear of the abrasive to the hose. In order to prevent leakage and air discharge, reduce the number of displacement, increase the use efficiency and efficiency of the abrasive, the spray position should be considered, the injection route is set up, the air pressure, the amount of sand out of the air and the surface pollution of the structure. The moving speed of the nozzle is mastered flexibly.
During the injection process, the metal injection process is adjusted in time according to the air pressure, the diameter of the nozzle, the corrosion state of the structure surface, the quality and efficiency of the treatment. After the surface pretreatment, the dust and debris are cleared with dry and oil free compressed air. The surface of the cleaned surface shall not be touched by hand; before painting, it is found to be found. The surface of the matrix metal is contaminated or rusted, and it must be retreated. After the pretreatment is completed, it needs to be sprayed as soon as possible, and the shorter the time the better. In wet or industrial atmospheric pressure and other environmental conditions, it is necessary to finish the coating in 4h, sandblasting in sunny days or when the temperature is small, and the longest interval of the processing of sand blasting in Han Tong industry is not more than 12h. This is the process of sand blasting process and the main points for attention.
What’s the deburring technology
What does the deburring technology have? A bit, drunk you and me! What’s the technology of burr technology? With the rapid development of engine manufacturing technology, such as -3C, consumer electronics, computer, mobile phone, watch, aviation, aerospace, and automobile, more and more surface deburring, three – and four – way parts are widely used.
In the process of metal surface treatment, we use the technical means to help remove burrs, and plan for the next project. Because people know more and more clearly about the harmfulness of burrs, people have explored various ways and means to eliminate burrs. Many international organizations are now exploring ways to reduce burr formation or burr free measures. It is in the process of product planning and technology planning that we think of possible burrs and minimize burrs. Manual removal of burrs is not required for burr size, burr symmetry and severity in various ways to remove burrs.
When the problem is put forward to the design of a part of the hydraulic system of the roadheader, many deburring technology reports point out the words “remove the burrs at the intersection of each hole”, but some people doubt that the processing cost is more difficult, the processing cost is increased, and the processing cost is increased. Workers often ignore the burr process, and some designers do not pay much attention to it. They often write “deburring” or “edge blunt” on the drawing. In fact, it is a very important process to go to the burr. In the hydraulic system, once the burr on the part falls off, when the component is entered, the slide valve will be stuck, the surface of the part is damaged, the hose is cut or the liquid port is blocked, which affects the performance of the main engine and even stops. If burrs fall on the positioning base surface, the machining accuracy will be affected. Burrs are also easy to scratch workers, affecting assembly quality and parts life.
With the development of science and industry, the technology of deburring technology has attracted more and more attention. In foreign countries, such as the developed industrial countries such as the United States and Japan, there are specialized research institutions, which have done a great deal of research on the mechanism of burr, deburring and testing methods, and the design of special tools. In recent years, China has also carried out practical research work and achieved gratifying achievements.
Application of stainless steel pipe in various fields
ainless steel pipe has been applied to various fields and has achieved great value. What are the latest applications of stainless steel pipes?
1. manufacturing of petrochemical equipment: the main demand of the user is the material 1Cr18Ni9Ti, specification [Phi] 108mm to 325mm stainless steel seamless pipe, which is mainly used for the pressure fluid conveying pipeline, and its tube billet is mainly imported and domestic is supplemented.
2. dye chemical equipment manufacturing: the main requirements are 304, 316, 316L, 310S, and other 300 series, the thickness 0.7mm to 3.0mm cold rolled stainless steel sheet and the thickness 4mm, 5mm, 6mm, 8mm hot rolled stainless steel plate; the material 1Cr18Ni9Ti, the specification [Phi] 25mm to Phi stainless steel seamless tube; the stainless steel fastener, the warm part of the matching . The above materials are mainly used for atmospheric fluid transportation pipelines and various tanks and kettle.
3. pharmaceutical chemical equipment manufacturing: the main needs of users are 304, 309S, 316, 321, and other 300 series, the thickness of 0.7mm to 3.0mm cold rolled stainless steel sheet and the thickness of 20mm to 50mm hot rolled stainless steel plate; material 1Cr18Ni9Ti, specification [Phi] 25mm to 80mm stainless steel seamless tube; matching.
4. stainless steel pipe in the field of vehicle / automotive industry: This is the fastest growing field of stainless steel pipe application. Stainless steel vehicles have been widely used in Japan, the United States and Sweden. Japan has been promoting since 80s. At present, its stainless steel train and vehicle has reached 60%. The car industry is the focus of the development of stainless steel pipes. The exhaust pipe of Baoxin stainless steel welded pipe vehicle is mainly aimed at the domestic and foreign high-end automobile market.
5. water industry: stainless steel pipe is the best material for water preparation, storage, transportation, purification, regeneration, seawater desalination and other water industries. Construction industry: China will accelerate the process of urbanization, and develop western and state led residential construction projects, all of which will increase the demand for stainless steel pipes. Our country began to use thin stainless steel pipe in 2000, its industry standard was introduced in 2001, but it has not been widely used in the early stage of popularization. However, with the enhancement of people’s environmental awareness in recent years, the thin-walled stainless steel pipe has been paid more and more attention to its advantages, such as safety, reliability, sanitation, environment and economy, and so on. At present, there are professional manufacturers in Beijing, Jiangsu, Guangdong and other places, and are applied to drinking water system, hot water system, heating system.
6. application of stainless steel pipe in environmental protection industry: industrial waste gas, garbage and sewage treatment plant should be made of stainless steel pipe. The green and environmental sunrise industry in China will develop rapidly in the period of “fifteen”. In 2008, the total output value of China’s environmental protection industry is expected to reach 200 billion yuan. During the period of “fifteen”, the annual growth rate of China’s environmental protection industry is about 15%. This will stimulate demand for steel and provide numerous business opportunities for steel enterprises and steel traders.
7. industrial facilities: the proportion of stainless steel pipes used in industrial facilities in developed countries can generally reach 15%-20%, and the proportion of domestic applications is still very small. With the improvement of the quality of domestic stainless steel pipe products and the development of special brand products, the application of stainless steel pipes will increase year by year in domestic industrial facilities.
8. home appliance industry: in the home electric industry, the large quantity of stainless steel pipe is the inner cylinder of the automatic washing machine, the inner liner of the water heater, the inner and outer shell of the microwave oven, the inner lining of the refrigerator, and the ferritic stainless steel is used. The proportion of stainless steel pipes used in Western Europe is larger than that in Japan. China’s microwave oven, refrigerator, air conditioning, television and other household appliances industry is a potential market for stainless steel pipes. It is estimated that in the next 5-10 years, the consumption of stainless steel pipes in the field of household appliances will be estimated to be 8% or even 10%, thereby driving the consumption of stainless steel pipes. The demand for stainless steel tubes in China’s household appliances industry will reach 100 thousand -15 million tons.
How to handle the stainless steel hook surface
These are the common problems of stainless steel bathroom accessories. Next, let’s introduce them one by one.
Scars: the surface of stainless steel hooks is tongue shaped, fingernail shaped, massive or fish scale thin patches or patches, also known as heavy skin, wing skin, skin grind. They are of different sizes or thickness, and are very irregular in appearance.
Two. Pitting: rough surface or small pits or pockmarks on the surface of stainless steel products. The shape is different, the size is different, there are some parts, and there are continuous slices. Sometimes it is called “pitting” with a large quantity, small area and irregular shape.
Three. Surface adulteration: a non-metallic impurity embedded on the surface of stainless steel hook material, called surface blending. It is generally distributed in dots, blocks or strips, and its color is dark red, light yellow, gray and white. It is mechanically bonded to the surface of stainless steel products and is not easy to peel off.
Four, stratification: stratification means that there is a clear separation of metal structure in the thickness direction of the steel plate, and there is an unwelded gap on the shear section. When it is serious, it can be red in two or three layers, and there is a visible dopant between the layer and the layer.
Five, surface crack: refers to the surface of stainless steel hook material cracking, its type is many, common is crack, hairline and transverse crack. The crack is usually a straight line or Y shaped crack that is consistent with the direction of the processing; the hair pattern is a thin, scattered or scattered hair pattern that appears on the surface of the stainless steel products.
Six, tensile crack: cracking is a “human” or “zigzag” transverse crack on the surface of section steel. Its cracking level is large, deep, not smooth, and its shape is not neat. It occurs mostly in the head and tail of the section steel, and the profiled steel appears mostly in the corner.
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