Domestic steel reaction injection moulding urgent need to increase research and development efforts

In recent years, with the rapid development of reaction injection moulding industry, as domestic steel mold provides a huge market, driven by domestic production mold steel, varieties, specifications and quality standards improved. China's metallurgical industry, research MASTER reaction injection moulding and development and the introduction of a large number of steel required for the mold industry, but domestic steel mold in terms of the variety and quality is still difficult to meet all the needs of the domestic market of the mold. In cold work die steel, for example, China's only cr12, cr12mov, crwmn steel. Our cr12mov steel, molybdenum and vanadium content is lower, worse than d2 steel overall performance. crwmn higher carbon content, and does not contain vanadium carbide network prone to severe, affect performance. pvc pipe fitting mould Today abroad to high-precision, standardized according to the development trend of cold stamping, had developed a high-performance tool steel, which has a secondary hardening steel ocm, dc53, vasco, die; flame hardened steel sx10570l; air quenching steel a4 and other micro-deformation. The country is also in urgent need of new die steel developed. Domestic hot work die steel gap also exists at present China's general steel only two kinds of steel. The foreign addition to the common types of steel, but also the development of a new yhd3, h26 and other varieties. Plastic mold steel gap Plastic injection mold makers is even greater. On the species, the current national standard is only a steel, while the United States has seven steel and steel to form a more complete series. In addition, business-to-die steel mold manufacturers also made a number of specific requirements: 1. Domestic new modern mold factory mold steel (module) usually require heat treatment and machining. Such as hot work die steel heat treatment and require a six-sided machining; rounded precision flat die steel requirement is less than 0.5mm; plastic mold usually requires quenched state after finishing supplier, and so on. But these require some mills currently difficult to satisfy all. 2. Delivery time for tool steel and higher requirements. Fast-paced, modern production, requiring mold manufacturing cycle is very short, usually in about 30 days. Design and preparation of which not more than 10 days, and requires the same time. This requires only a mold steel delivery deadline under 5 heaven, and reaction injection moulding manufacturer of tool steel is basically the implementation of "zero inventory" management model, a model someday, someday purchase materials. This requires plastic container molding that the steel must meet end-user demand for modern production for the embryo. 3. Requests for reaction injection moulding steel mills quality and life assurance and commitment. Because of modern, large-scale, complex, long-life mold is extremely expensive, so manufacturers mold steel quality and extremely concerned about their life, preferring to spend more money, but also to ensure the quality of steel. If the country can not meet, they prefer to import from abroad. According to conservative estimates, in 2005 the domestic consumption of at least 500,000 tons of steel mold, where the market is huge, but the domestic steel mold manufacturing enterprises in order to occupy a greater share therein, we must open up the research and development, technological innovation, market devote greater effort.

Introduction plastic injection toy mould car double injection mold parting surface

Introduce double injection mold parting surface: it single injection mold parting surface compared to the addition of a gating system for taking parting slug. Thus, called dual injection mold MASTER plastic injection mold makers surface. Double injection mold parting surface can be located in the center of the product Ge point gate area, but high cost, MASTER plastic mold manufacturer structure, requires a larger opening stroke, it is less for large injection molded plastic products.
After analysis, using a single injection mold parting surface toy structure. Because toy tram shell surface should be smooth and beautiful, so rectangular side gate.

Introduction plastic injection toy mould car

Mold Introduction
Injection mold structure in the form of toys, plastic mold is determined to ensure that the main tool for plastic shape, size, precision and surface quality, is one of the MASTER mold elements of the molding process. By injection molding can be divided into general structural features: dual injection mold parting surface and a single injection mold parting surface,
Single injection mold parting surface of introduction: Since only one parting surface, it is called a single injection mold parting surface, also called two-plate injection molding. This injection mold with a simple structure, and the most. After clamping, move, scheduled to die combination constitutes cavity side of the MASTER pvc pipe fitting mould mold sprue, runner and gate agency has launched on the parting, moving mold for plastic parts and casting system introduced slug . Simple single injection mold parting surface structure, convenient operation, but in addition to using direct gate outside the cavity gate bit Ge can choose the side of the product to release from the parting line.

MASTER plastic rattan molding immersion filtration to remove the influence of impurities on the gypsum mold performance

The use of desulfurization gypsum produced die cast, there are raw material composition and processing process, desulfurization gypsum produced will contain a variety of impurities, these impurities including fly ash, calcium carbonate, calcium sulfate, organic calcium and sodium, potassium, magnesium sulfate or chloride composition of soluble salt. In addition to these, there is also a caseof nature when limestone adverse or grain position unreasonable, the desulfurization gypsum impurities out of production, quality and use of gypsum will cause great influence. One of the biggest impurities harmful to the flue gas desulfurization gypsum is mainly by chloride MASTER plastic mold manufacturer dominated the soluble magnesium salt and sodium salt, they on the plaster mold bonding properties, rheological properties significantly. In a humid environment will make gypsum produced "return frost" phenomenon, the quality will seriously affect the plaster mold such conditions. Also in the production process, because the pulverized coal combustion efficiency is low and the dust removal efficiency is not normal, the fly ash settling down in the desulfurization gypsum slurry in flue gas, thus affecting the bond strength and color appearance later plaster mold and gypsum mold. In order to reduce theinfluence of impurities of soluble salts, such as fly ash on the performance of desulfurization gypsum, we take a series of measures, in the heating dehydration before the water soaked filter are pre processing. After processing, the desulfurization gypsum can normal setting. The main components of desulfurization MASTER plastic container moldinggypsum and natural gypsum is basically the same, but because of raw material, process is different, resulting in the gypsum particle morphology, crystal, impurity so different, affects the performance of the plaster mold. In order to realize the comprehensive utilization of desulfurization gypsum better, must be carried out according to the characteristics of FGD gypsum itself. Particle size distribution of poor desulfurization gypsum, will have a negative effect on the performance of gypsum slurry, can take the "ground" measures, to improve the particle size distribution of the desulphurization gypsum and natural gypsum mixed use.

Meter box fire caused sake what reason

Meter box fire caused sake what reason? Meter boxes can be said that each family an indispensable power transmission equipment. Continuously growth in recent years as home appliances, household consumption growth is also Continuously, power supply is in short supply. plastic injection mold makers Continuously since electricity consumption growth, meter boxes fire accidents have also occurred frequently. Well, the reason causing the meter box on fire reasons, what does? Cause a fire because of the meter box has many reasons, such as power load, humidity, installation inaccurate, wiringchina plastic injection molding causing a short circuit on the meter so the private calm. In addition, as more rain season and the summer load electricity meter box may cause a fire or electric meter. Treatment meter box on fire: When the meter box on fire, do not panic, stay away from the meter to avoid injury to, then cut off the first time the Pro google keyword ranking and then dry or gas fire extinguishers, if not cut off the power, absolutely not directly destroy splashing water to prevent electric shock or electrical explosion wounding, causing secondary danger.

Meter box decorative painting techniques and the use of features

Meter box decorative painting in recent years introduced a new bedroom decorations. Products for home and commercial establishments wall decoration process can be a useful way to solve the optimal block meter boxes and wall decor needs. Features: 1, concealed china plastic injection moldingmeter box: by decorative painting decorative meter box. 2, the design and decoration of space: a variety of styles of decorative painting, home improvement. 3, the unique structural design: slide guide opening and closing, convenient Baidu search ranking, opening and closing operation reaction injection moulding of innocence. 4, versatility: the built-in hook panel, unique storage space. 5, easy to use, easy to install: the use of clever hidden design, built-in mute slide structure, frame may slip open and close, easy to operate

Micro-cavity insert manufacturing process follows

Micro-cavity inserts production process as follows: ① A parts CAD drawing production reticle on a glass layer 10nm thick chromium plating film, according to the original definition of the light-transmissive and non-transmissive portion; ② wafer pretreatmentpvc pipe fitting mould by degreasing , polishing, pickling, washing purification methods of processing silicon surface to improve adhesion of the photoresist and the wafer; ③ aluminum evaporation, vapor deposition on a silicon wafer in a thickness of about 1μm aluminum film; ④ glue thrown in a silicon wafer uniformly coated with an aluminum layer of a positive photoresist film; covered ⑤ exposure, the wafer is coated with photoresist mask with a wavelength of ultravioletplastic injection toy mould light of 350 m through the photoresist mask selective irradiation; ⑥ development, the wafer was immersed in the developer after exposure, the photoresist was dissolved by the developer and irradiated portions except To get the same mask pattern; ⑦ to glue; ⑧ ICP etching, performed by plasma etching deep grooves; ⑨ to aluminum, the aluminum corrosion removal of the protective film, and ultimately obtained a partial structure micro-cavity inserts.

Micro-cavity insert manufacturing process follows

Micro-cavity inserts production process as follows: ① A parts CAD drawing production reticle on a glass layer 10nm thick chromium plating film, according to the original definition of the light-transmissive and non-transmissive portion; ② wafer pretreatment by degreasing , polishing, pickling, washing purification methods of processing Custom plastic mold silicon surface to improve adhesion of the photoresist and the wafer; ③ aluminum evaporation, vapor deposition on a silicon wafer in a thickness of about 1μm aluminum film; ④ glue thrown in a silicon wafer uniformly coated with an aluminum layer of a positive photoresist film; covered ⑤ exposure, the wafer is coated with photoresist mask with a wavelength of ultraviolet light of 350 m through the photoresist mask selective irradiation; ⑥ development, Crate moldthe wafer was immersed in the developer after exposure, the photoresist was dissolved by the developer and irradiated portions except To get the same mask pattern; ⑦ to glue; ⑧ ICP etching, performed by plasma etching deep grooves; ⑨ to aluminum, the aluminum corrosion removal of the protective film, and ultimately obtained a partial structure micro-cavity inserts.

Develop the right casting process

Casting process is a manifestation of die-casting factory technical level , he can die casting machine characteristics , mold characteristics , casting characteristics , production factors such as die-casting alloy correctly combine the lowest cost , the production of casting products to meet customer requirements . Therefore, we must pay attention casting process selection and training of engineers . Die Casting Die Casting Process Engineer is responsible for the total production site Custom injection moulding technical person , in addition to develop the right casting process , based on the factors of production changes promptly amend casting process , also responsible for the installation and adjustment work mold , die casting operatives, mold maintenance worker training and awareness .
⑴, determine the most reasonable productivity, every predetermined cycle time ofthe injection cycle . Low productivity is certainly not conducive to improving economic efficiency, high productivity, often at the expense of die life and casting a pass rate of the cost of reckoning Xi Zhang economic benefits may be even worse .⑵, determine the correct casting parameters. In casting meet customer quality standards to ensure the premise should make the injection speed , injection pressure , the lowest temperature of the alloy . This will help reduce machine , mold load , reduce failures, and increased life expectancy . According to the characteristics of die casting machine , mold characteristics , casting characteristics , die-cast Custom plastic moldaluminum features an isosceles triangle to determine the fast injection speed , injection pressure , boost pressure , slow injection stroke , rapid injection stroke , punch with the distance , launch stroke , dwell time , push the reset time , the alloy temperature, mold temperature.⑶, use water-based paint , must develop a strict detailed spraying . Paint brands , the proportion of paint and water , sprayed every part of the amount of mold ( or spraying time ) and spraying sequence , air pressure from the gun and the molding surface of the molding surface spraying direction angle .
⑷, according to the actual die casting mold cooling determine the correct solution . Right mold cooling solutions on production efficiency , quality of castings , die life have a great impact . Opening the program should provide for a method of cooling water , die casting mold several times began to cool , separated by a few minutes several times a mold cooling water valve opening to a predetermined opening . Cooling intensity point of the cooling system should be adjusted on-site casting process engineer , with mold spray reaches thermalequilibrium .⑸, provides for different slide moving parts, such as punch, guide post , guide sleeve, pulling mechanism , putter, reset lever and other parts of the different lubrication frequency.⑹, formulate rules for each die casting die casting , die casting and training and supervising workers accordance with procedures .⑺, according to the complexity and newness dies , molds to determine the appropriate preventive maintenance cycle. Appropriate mold mold preventive maintenance cycle should be using will be faulty and not faulty die casting times. Mold has failed in use , can not continue to produce , was forced to repair , not being advocated methods.⑻, according to the complexity of the mold , recency and stick mold degree of risk , determine the module to eliminate the stress cycle ( typically 5000-15000 die times once ) and the need for surface processing . Such as nitriding, nitriding depth . 0.33 , max 0.55 .