2018年11月25日星期日

Processing Technology Of Fruit Juice Machinery

Design determines process, process may decide design. Components with the same function can be designed with different structures, some of which are easy to process and ensure machining accuracy, but some structures are difficult to process, or even unable to process, so designers must understand the process. For the designed mechanical products, the technological process that each part should choose, the dimension, tolerance, roughness and technical conditions marked by each part drawing have a direct impact on the quality of the technological process and the length of the production cycle. According to the characteristics of part drawing and parts material, one or more of the following processes can be selected, such as cutting, casting, forging, sheet metal, stamping, extrusion, etc. Each of these processes has its most reasonable economic accuracy. So after the determination of part drawings and materials, to a certain extent, the process is determined.
When the shape of the part is more complex and the size is larger, it is difficult to forge. If the casting performance or welding performance is adopted, the structure should also meet the requirements of casting or welding. Casting or welding? Die forging or free forging? If the parts are produced in small batches and the cost of wooden dies and moulds exceeds the cost savings of machining, it is better to use welded parts or free forgings. If the production volume is large, casting or die forgings are more favorable.
If the other properties of the parts are satisfied, but the welding performance of the materials is not good, and there is no suitable materials with good welding performance, you can change the mode of connection. For example, welding should be threaded connection or other connection.
Sometimes, the delivery date of the product also affects the choice of manufacturing process. If the delivery date is urgent, welded parts are often used instead of castings.
When parts are manufactured by cold drawing process, the elongation of materials should be considered, and the effect of cold working hardening on the mechanical properties of materials should be considered. The hardness, yield limit and strength limit of steel and some non-ferrous metals have been greatly improved after cold work hardening, and the degree of improvement is related to the section shrinkage rate during processing. The larger the section shrinkage rate, the greater the degree of improvement.
The same structural material, if advanced and reasonable heat treatment process is adopted, the strength performance can be doubled. The specific conditions must be taken into consideration when adopting the heat treatment process.
For cutting parts, according to the geometry of the parts, the type of machining surface and the machining position, one or more cutting processes should be determined  such as turning, milling, drilling, boring and grinding. The same hole, turning, boring or grinding as the final process, depends on the machining accuracy and surface roughness.
In order to reduce tool wear and improve productivity and machining accuracy, the cutting performance of materials should be considered in mass production on automatic machine tools.
Another important aspect of the process is assembly, which is to assemble all parts into a whole. According to the structural characteristics of the product, assembly should choose suitable connection mode. Bolts, keys and pins can be easily disconnected. Rivet connection, removable but inconvenient. Welding, forming permanent connection, not removable.
Whether the surface is painted, polished, electroplated or coated with plastic depends on the appearance and corrosion resistance requirements.

2018年11月18日星期日

Material selection principle of juice processing machine parts

In the process of designing and manufacturing juice processing machine parts, it is very important to select and use metal materials reasonably. It is necessary to consider whether the properties of materials can adapt to the working conditions of parts and make parts durable. The material is required to have better processing performance and economy, so as to improve the productivity of parts, reduce costs, reduce consumption and so on. Material selection should pay attention to the chemical and physical properties, mechanical properties and technological properties, such as density, modulus of elasticity, strength, toughness, corrosion resistance, wear resistance, high and low temperature strength, welding performance, hardenability, heat treatment deformation, malleability, cutting performance, economy and so on. Material selection should be based on the product batch.

2018年11月16日星期五

Hardox400 wear resistant steel plate

HARDOX 400 is a wear-resistant steel plate with a Brinell hardness of 400HBW. It has good cold bending properties and is mainly used in anti-wear conditions. The HARDOX 400 has very good solderability. The hardox 400 are mainly used in making crushers, sieve plates, feeders, feed funnels, hoists, blades, conveyors, buckets, blades, gears, dump trucks, scrapers, industrial trucks, railways Trucks, bulldozers, excavators. Slurry pipes, screw conveyors, presses, etc. HARDOX400 wear-resistant steel is "fine grained steel." The HARDOX400 wear steel hardness is about 370-430HBW.
HARDOX400 wear-resistant steel mechanical properties: yield strength Re = 1000MPa. Tensile strength Rm = 1250 MPa. Elongation A5 = 10% (typical value of 20 mm thick steel plate).
HARDOX400  wear steel impact toughness: test temperature: -40 (-40F) °C. Impact energy Charpy-V longitudinal = 45J (20 mm thick steel plate typical value).
HARDOX400 wear-resistant steel delivery status: quenching.
HARDOX400 wear-resistant steel implementation standards: EN 10 204 - 3.1.

hardox 400

Applications:

Due to its high hardness, high strength and high toughness, HARDOX wear-resistant plates are ideal for applications where wear is severe. The high wear resistance of the steel plate extends the service life of the dump truck body, the bucket of the excavator, the crusher and the like.
The hardness of the steel plate is obtained by an effective quenching process on our water quenching line. This method achieves both higher hardness and lower alloy composition in the steel. The resulting wear plates are easy to machine, bend and weld.
Chmecal Composition of Hardox 400
Grade C max Mn max P max S max Si max Cr max Ni max Mo max B max V Other Element
Hardox 400 0.20 1.60 0.025 - 0.70 0.80 1.00 0.80 0.005 -  

Mechanical Properties of Hardox 400
  Tensile Strength Yield Strength  
Grade Origin Mpa Mpa Elongation in 2 inches (min.)% Brinell Hardness
Hardox 400 Sweden 1250 1000 10 360-440
 

Application areas:

1. Construction machinery and equipment: loader bulldozer excavator bucket board, side blade board, bucket bottom board, blade, jaw board;
2. Handling machinery and equipment: unloading mill chain plate, hopper liner, grab blade, medium-sized automatic dump truck tipping board;
3. Construction machinery and equipment: cement pusher gear plate, concrete mixer liner, mixing floor liner, dust collector liner;
4. Metallurgical machinery and equipment: iron ore sintering conveying elbow, iron ore sintering machine lining, scraper lining;
5. Mining machinery and equipment: mineral materials, stone crusher liners, blades;
6. Other mechanical equipment: sanding machine cylinder, blade, various port machinery wear parts;
7. Thermal power machinery equipment: coal mill liner, coal bucket, coal sub-transport, coal sub-distributor grid, coal unloading equipment liner;
8. Shot blasting machinery: shot blasting machine lining.

ANSON Steel is one exporter of HARDOX 400 steel plate. The HARDOX steel plate is a solidfied steel, especially suitable for long haul use.

Selection method of supporting equipment for steel silo

The selection of supporting equipment for steel silo is very important. For example, horizontal transportation can use buried scraper conveyor or belt conveyor. Which equipment is better, futher analysis and comparison are needed.
The advantage of the buried scraper conveyor is that it can be discharged at multiple points, the sealing performance is good which effect that the belt conveyor can not be reached, so it is more suitable to select the buried scraper conveyor on the top of the steel silo. In addition, the belt conveyor has the advantages of reducing material breakage, allowing long-distance transportation and power consumption. Therefore, in industries with high material crushing requirements, such as the wet-processed starch industry, only belt conveyors can be provided, and buried scraper conveyors cannot be used.
belt conveyor
Therefore, the selection of steel silo equipment is very critical in the process of silo design. Choosing unsuitable equipment can not only meet the requirements of the process, but also cause irreparable damage.

How to choose silo supporting equipment?

  • The output of the equipment is matched with the function: the large amount of transportation depends on the capacity of the steel silo and the ability to enter and exit the grain. The storage capacity is matched with the subsequent main workshop. Choosing too large equipment will not only cause equipment investment waste, but also the operating cost. But devices that are too small will often have traffic jams. In the current port bulk grain steel silo, the general type of ship is between 5,000 tons and 6,000 tons, usually involving 1000t / h of production capacity to meet the capacity of loading and unloading ships, otherwise there will be port detention. In grain and oil processing plants, it depends on the ability of the car to unload grain. Generally, the efficiency of bagged grain unloading grain is low, and the efficiency of bulk grain unloading grain is high.
  • Consider sufficient steel silo equipment maintenance space: The steel silo equipment maintenance space is a very important consideration in the process of silo design. Because the steel silo equipment needs normal maintenance, it requires sufficient space for the operator. Such as the replacement of bearings, the replacement of cleaning sieves, and the maintenance of motor idlers.
  • Electric control room position: It is better to set up a separate room in the electric control room. It can also be set in the working tower or under the steel silo, but it must be in a closed environment, no dust can enter, otherwise it will affect The life of electrical components and serious safety accidents.
silo control room

How to increase the service life of grain steel silo supporting equipment?

This is a question that all customers will think of, let me tell you today. All customers want to buy a set of worry-free equipment, because such equipment has low failure rate, low maintenance rate, can save maintenance costs and increase the service life.
      Steel silos and vertical silos generally have supporting equipment, hoists, scrapers, belt conveyors, etc. These are the most basic configurations. Customers with high storage requirements will also have cleaning equipment such as drum screens and vibrating screens. color sorting machines, dust removal equipment, pulse dust removal, suction separators, etc., then what do we need to pay attention to when choosing steel silo supporting equipment?
  • First: look at the thickness of the board, look at the material of the silo supporting equipment. Whether it is conveying equipment, or cleaning equipment, they alll use steel board. The main difference of high quality supporting equipment and low quality silo supporting equipment comes from the procurement links and the choice of raw materials, many In order to save costs and expand the price advantage, manufacturers often lower the standard in material selection. The products with low prices appearing on the market are some non-standard products. The steel plates used are non-standard steel plates, and the accessories used are non-standard accessories. Without the raw materials provided by regular manufacturers, the service life and use effect of the equipment will definitely be greatly affected.
  • Second: look at the accessories, look at the manufacturers, now in this era of globalization, all manufacturers in order to improve production efficiency, will longitudinally purchase the necessary equipment for production equipment, such as sprocket and bucket used in scraper and conveyor , scraper, and motor to transmit power, reducer, electronic control equipment, etc. These accessories are invisible in the inside of the equipment, but directly affect the use effect and service life of the product, and the output is up to standard. The key point is that when you buy, you can see weather the manufacturers of these accessories is a better supplier in China, so you can judge the quality of the equipment manufacturers, and reduce the failure rate in the future use. It is more worry-free, it also reduces the cost of maintenance and improves the efficiency of use.
  • Third: look at the combination of product compatibility, good products and equipment in the process of installation and assembly, must have a good degree of fit, if the matching equipment does not match the size of the installation process, it will not have a good use effection.