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With high quality, predictable unwavering quality

This is because of a few factors: the capacity to supplant numerous metal parts with one plastic part and the ensuing end of latch and gathering needs, just as the capacity to add colors to plastic melts and the resultant disposal of painting or laser stamping forms. Plastic can advance part quality in a few different ways, including through: Capacity to reuse plastic materialsBroadened item lifeIncreasingly differing plan alternativesEnd of tedious, expensive auxiliary proceduresMore noteworthy item basic qualityLighter weight and improved convenienceIn case you are looking to replace your metal angle iron to plastic angle iron, look for a provider following highest standards of quality. Actually, most organizations can anticipate that metal-should plastic transformation to bring about cost reserve funds of 25-50%.As referenced, plastic-to-metal change can bring about investment funds of 25-50 %.Advantages Of Replacing Metals With Plastic Albeit metal-to-plastic transformation was presented during the 1950s, 

with the development of building grade pitches, numerous producers today are new to the benefits of this flexible method. Plastic parts offer a few widespread advantages over metal, including: Can have higher rigidity versus numerous sorts of metalDecreased part weightDecreased assembling costsPredominant design flexibility or adaptabilityDecreased wasteQuicker assembling timesSimple adherence to different administrative compliancesLower bundling and delivering costsUp to multiple times longer lifeExpanded erosion oppositionRepeatable, unsurprising productionOther than decreasing weight and improving generally part quality and consumption obstruction, plastic-to-metal transformation additionally takes into consideration the combination of numerous metal parts into a solitary plastic part. The Advantages of Plastic over Metal The same numbers of ventures become progressively aware of the advantages of metal-to-plastic change, high-volume infusion shaping is rapidly turning into the technique for decision for part fabricate. 

With high quality, predictable unwavering quality, and the capacity to be fabricated to indistinguishable tight resiliencies from metal, plastic parts can offer various advantages to organizations over a wide range  China Plastic Storage Boxes  of enterprises. As different propelled, cost-proficient plastics are being created in the present moving scene, numerous ventures are understanding the advantages of supplanting metal parts with infusion formed plastic. Other than saving money on costs, nonetheless, utilizing plastic can fundamentally improve the nature of parts. . With specific structure systems, plastic parts can really be made to have more excellent physical and substance properties than metal.Utilizing Plastic Parts to Cut Costs. What' more, beside offering equivalent durability and taking into consideration indistinguishable tight resiliencies from metal, plastic parts require less optional activities, in this manner saving money on schedule and expenses

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The basic concept and technology key of semi-solid continuous

1. The basic concept and technology key of semi-solid continuous casting Semi-solid continuous casting is the product of the combination of semi-solid processing and modern continuous casting technology. The fundamental difference between it and ordinary continuous casting is the state of the metal melt when it enters the crystallizer. In ordinary continuous casting, the molten metal enters the crystallizer in a fully liquid state. In the semi-solid continuous casting process, the metal melt enters the crystallizer in a state where the solid-liquid two phases coexist, and the solid phase therein is a non-dendritic grain-like structure. The main technological process of semi-solid continuous casting is metal smelting → preparation of semi-solid slurry → billet drawing. There are two main technical keys, one is the formation and control of non-dendritic solid phase under continuous cooling and stirring conditions, and the second is the filling of semi-solid slurry containing non-dendritic solid phase. 2. The emergence, development and current status of semi-solid continuous casting 2.1 General Flemings first proposed the technical idea of ​​semi-solid continuous casting [1], and first conducted a pilot study on low melting nonferrous alloys [2]. After entering the 1980s, 

American Alumax company took the lead in designing and manufacturing a non-ferrous semi-solid continuous casting machine that can be produced in small batches [1]. Subsequently, the United States ISC (INLANDSTEELCOMPANY) began the commercialization of semi-solid round billet continuous casting machine. On this basis, in 1995, American ISC further carried out the experimental research of semi-solid continuous casting of steel materials [3], and achieved gratifying results. Southeast China University, Tsinghua University, General Institute of Nonferrous Metals and other units have also conducted research on semi-solid casting of nonferrous metals. In 1996, the research group jointly established a project with Hebei Hejin Building Materials Machinery Factory and other units to carry out research on semi-solid continuous casting of ferrous metals and made breakthrough progress [4]. It was certified by the Ministry of Education in early 1998 and reached the international The advanced level has filled the gap in the research of semi-solid continuous casting of ferrous metals in China. Looking at the research of semi-solid continuous casting technology at home and abroad, it can be found that the main progress achieved so far is: (1) the technical connotation of semi-solid continuous casting is established; (2) the transition from low-melting nonferrous alloys to high-melting ferrous metals ; (3) Have a clear understanding of the formation and evolution of non-dendritic solid phase under continuous cooling and stirring conditions; (4) Put forward the stability criterion and process design criteria of semi-solid continuous casting process; (5) There is an objective understanding of the characteristics and quality evaluation of solid continuous casting billets. 2.2 Semi-solid continuous casting machine models There are two types of semi-solid continuous casting machines: horizontal continuous casting machines and vertical continuous casting machines. 

The basic composition of the two types of models is the same, including the pulping chamber, transition section, crystallizer, tension straightening mechanism and cooling and heating system. The main difference between the two is whether the direction of the blank is horizontal or vertical. Horizontal semi-solid continuous casting machine slurry has a large pressure loss into the crystallizer, it is prone to blockage of the flow channel, and it is difficult to produce semi-solid billets with high solid phase fraction, and this continuous casting machine occupies a large area. Vertical semi-solid continuous casting machine slurry filling crystallizer is easy, can produce semi-solid billet with high solid phase fraction. However, this type of continuous casting machine requires pit work, and the length of the slab is limited. At present, semi-solid continuous casting machines are mainly vertical type continuous casting machines. The semi-solid continuous casting machine room for non-ferrous metals is mostly made of stainless steel, while the ferrous semi-solid continuous casting machine room is made of refractory materials without exception. The mixing method of the pulping room is mainly non-contact electromagnetic stirring, and the early mechanical stirring is also used in the semi-solid continuous casting of non-ferrous metals. In order to slow down the cooling rate of the metal melt in the pulping room, most of bronze cast Suppliers  them are equipped with a heating device outside the pulping room. In addition, in order to ensure that the semi-solid slurry can enter the crystallizer smoothly, a transitional section made of refractory material and having a heating function is added between the pulping chamber and the crystallizer of the foreign semi-state continuous casting machine to make the semi-solid melt The temperature picked up when passing. The billet drawing mechanism is basically a simplification of modern continuous casting technology. 

 There are mainly two types of hydraulic and mechanical types. The hydraulic blank-drawing mechanism runs smoothly and is easy to adjust, and the mechanical blank-drawing mechanism is easy to operate and has low investment. The semi-solid continuous casting machine for ferrous metals successfully developed by this research group adopts three-dimensional magnetic stirring of rotating permanent magnets, and eliminates the external heat source heating and transition section of the pulping chamber. The biggest advantage of this semi-solid continuous casting machine is its high reliability. The cooling rate of the pulping chamber is adjusted by the material, structure and cooling water system of the pulping chamber. Therefore, the equipment is simple and easy to operate. The semi-solid continuous casting machine has successfully realized the semi-solid continuous casting of white iron, high manganese steel and ordinary carbon steel, which can be used for the production of round billets under ф100mm and the direct forming of near-net shape parts.

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Suspension shot blasting machine is a combination

Casting cleaning is one of the necessary production processes for any foundry. In addition to casting types such as size, shape, weight, and production speed, capacity requirements, etc. will affect the choice of shot blasting machine, there are other considerations. Thousands of casting types and structures are produced by various molding process lines, and there are a variety of combinations of cooling and sand falling methods that match. The process of all these upstream processes will affect the cleaning requirements. In addition, downstream production, such as the opinions of the end users of castings, will also affect the choice of shot blasting equipment in the foundry. The ideal temperature for shot blasting of castings is preferably close to the ambient temperature, but The cooling time is not the same, so the temperature of the casting into the blasting chamber is also very different.

 Therefore, when designing the shot blasting machine, the highest possible temperature of the user's production should be considered. Assuming that the customer needs to clean such extremely high temperature castings, the designed shot blasting machine must meet such requirements, so as to reduce future maintenance and downtime And other issues including operational safety hazards. The shot blasting machine used in general foundries can process castings with a surface temperature of about 100 ° C. At this temperature, it is not suitable to use rubber track conveyor type shot blasting machine, but to choose steel track type or manganese steel track conveyor type shot blasting machine. At high temperatures, such as up to 175 ° C, it must be supplemented by special high-temperature seals, curtains and hoist tracks. Manual shot blasting machine, inclined belt shot blasting machine for cleaning the brake drum, rotating roller wheel shot blasting machine for cleaning the casting pipe, beam cleaning and roller table cleaning machines with automatic nozzles for cleaning the cylinder body and cylinder head . 

Suspension shot blasting machine is a combination of two types of workpiece conveying methods, batch type and through type, which is suitable for the cleaning requirements of various castings with high output. For foundry enterprises, the most common process flow is shot blasting after falling sand and trimming. Sometimes, the cleaning of the injection gate attached to the casting is performed together with the sand cleaning of the casting; sometimes, the cleaning of the gate is cleaned in a separate process. The process laboratory of the TC Technology Center of Welbelaite (Group) also provides customers with shot blasting tests to determine which cleaning method is best for their cleaning needs. The laboratory is equipped with batch, continuous and multi-purpose shot blasting equipment to simulate many different shot blasting system combinations and process parameters. 

Determining the cycle time for batch-type models and the cleaning  brass gear Suppliers  speed for continuous-type models are important links, so that the purpose of successful machine selection and installation can be achieved. From the parts of cars, trucks, forklifts, loading trucks, construction and agricultural vehicles, to pipeline interfaces, to cast iron kitchen utensils, valves, etc., for various castings, there will be a variety of workpiece clamping, Shipping and cleaning requirements. Before choosing a shot blasting machine, the foundry and equipment manufacturer must fully understand the characteristics, parameters, process flow and cleaning requirements of the production to determine the most effective and suitable shot blasting cleaning solution.

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This process design can get a good internal organization structure

The dry sand commonly used in lost foam casting is quartz sand (density 2.65g / cm3, refractoriness 1713C), particle size 0.5-3.3mm, sieve number 40-60 mesh; also useful olivine sand (density 3.2-3.6g / cm3 , The refractoriness is 1750C), the latter is slightly better than the former, and the heat storage is also slightly larger due to the higher density. However, these sands are not enough to obtain a dense structure of the anti-wear castings: because of poor thermal conductivity, the solidification time of the casting is long and the structure is coarse and loose. The liner produced by quartz sand in Tengfei Foundry, Yutian County, Hebei Province T coupler plug is 5% lighter than the liner produced by tidal mold sand of the same geometric size, so the wear resistance is very poor. Fearing to spend money to change other sand types, had to follow the tidal sand production.

 So, whether the use of lost foam casting can produce high-quality anti-wear castings? The answer is yes! First of all, how to choose or are willing to choose a special sand with good thermal conductivity. Such as chromite sand (density 4.0-4.8g / cm3, refractoriness> 1900C), its thermal conductivity or heat storage is 3-4 times that of quartz sand, second only to zircon sand (density 4.6g / cm3, Refractoriness 2430C) and metal type. Liaoning Anshan Yongxin Wear-resistant Casting Factory uses chromite sand to produce grinding balls (as shown). The hardness of low-chromium alloy 0100 grinding balls is above HRc50. Of course, the effect is good. Under the other conditions are the same, the process design of the pouring system is correct or not, which affects the inherent quality of the casting, which affects the use of anti-wear castings. However, how to properly design the pouring system is the second feature that should be paid attention to in the lost foam casting anti-wear parts. The molten metal is injected from top to bottom, and the molten metal first reaches the bottom. During a relatively long sinking process, the temperature drops and solidifies first. The whole casting is solidified in sequence. Those who solidify first can get the high-temperature metal liquid supplement in the upper part; those who solidify after the item can get the high-temperature metal liquid supplement in the gate or the blanking riser. It is a schematic diagram of the casting system of the jaw plate of Linjiatai Foundry in Dandong; it is a schematic diagram of the casting system of the large plate hammer of Urumqi Hongda Cast Steel Factory. 

This process design can get a good internal organization structure. Uses a hot riser, the solidification sequence is that the casting is solidified first, and then solidified after the riser. The casting can be fully compensated during the solidification shrinkage process, so as to obtain a dense casting. A blank riser is a type of hot riser. It is a schematic diagram of the use of thermal risers for large gear castings in Tangshan Cast Steel Plant. 3. The inflow runner is set on the side. For castings such as lining, it is also a good process design to set the inflow runner on the side, but it should be located at 1/2 of the height of the casting or slightly above. The casting has a certain angle of inclination. A vent (or feeding) riser is set at the highest point. It is a schematic diagram of casting of lining plate of Yunnan Malong Cast Steel Factory. This process is conducive to the solidification of the casting layer by layer from the lower part to the upper part. The upper part of the in-gate is conducive to shrinking the lower part. The riser is located at the highest point to benefit exhaust and retraction.