The common material of low-pressure casting is A356\ZL101\ZL101A,this kind of material is usually applied to auto part, storage part,transformation part,etc.
The pressure on the surface of the molten metal is 0.06~0.12Mpa.This processing has good shrinkage, casting tissue is dense, easy to produce the large thin-walled complex parts, the casting head is not needed , metal yield can be up to 95%.
Low pressure casting can adopt sand type, metal type, graphite type, etc. The filling process is not only different from gravity casting such as metal casting and sand casting, but also different from high pressure and high speed filling pressure casting, which has the following advantages:
1) Pure metal liquid filling type, which improves the purity of the casting. Because the slag generally floats on the surface of the metal liquid, and the low pressure casting by the metal liquid in the lower part of the crucible realizes the filling through the lifting pipe, which completely avoids the possibility of the slag into the cast cavity.
2) The metal liquid filling type is smooth, reducing or avoiding the turnover, impact and splashing phenomenon of the metal liquid when filling the type, thus reducing the formation of less oxide slag.
3) The casting molding performance is good, the metal liquid filling under the pressure action, can improve the fluidity of the metal liquid, is conducive to the formation of clear outline, smooth surface casting, for the formation of large thin-wall casting is more favorable.
4) The casting crystallizes and solidifies under pressure, which can be fully condensed, and the casting structure is compact.
5) Improve the yield of metal liquid, generally do not need to burst, and the same metal in the lifting tube can be returned to the crucible, reuse, so that the yield of metal liquid greatly increased, the yield can generally reach 90%.
6) Convenient production and operation, good working conditions, high production efficiency, easy to achieve mechanization and automation.
Low pressure casting also has some disadvantages, equipment and mold investment is large; in the production of aluminum alloy casting, crucible and lift pipe long time with metal liquid contact, easy to erosion and scrap, will also make the metal liquid iron and performance deterioration.
Low-pressure Casting Parts,A356 casting parts,A356 low-pressure casting parts,ZL101 casting parts,ZL101 low-pressure casting parts,A356 casting components NINGBO ZHENHAI BOLANG METAL PRODUCT FACTORY , https://www.diecastingdie.com
Low-pressure casting was the earliest anti-gravity casting technology, which was first used in industrial production in the 1940s. Nowadays, low-pressure casting is mainly used in the production of aluminum alloy and magnesium alloy parts, such as the automotive hub of the automobile industry, the cylinder body, cylinder head, piston, missile shell, impeller, air guide wheel and other castings with complex shapes and high quality requirements.
Recently, a number of LED listed companies or listed companies that are also engaged in the LED business announced the first-half performance forecast, and the companies with pre-increased performance accounted for the majority. Among them, Huacan Optoelectronics, Zhouming Technology, Lianjian Optoelectronics, and Weiwei Co., Ltd. have net profit growth of 185-215, 82.97-112.65, 247.61-270.78, and 148.65-year, respectively. 175.77. From the specific situation of each company, the downstream application demand of the LED industry in the first half of 2014 continued to be strong since last year, and this demand has been transmitted to all parts of the entire industry chain, including the packaged components and glue in the middle reaches. , packaging equipment, upstream epitaxial chips, sapphire, MOCVD equipment. The sales of various companies are steadily increasing, but due to the combined effects of various factors such as price war, cost and channel development, the final profits are different. But sales growth is certain. This is also a consensus in the LED industry. At the recent G20-LED lighting summit, the CEOs of the participating companies all said that since 2014, driven by the rapid growth of downstream lighting application demand, the entire LED industry application field has been presented. Rapid growth and even explosive growth trends have also driven the production and sales of the midstream in the industrial chain. But at the same time, it is also considered that the current LED industry, especially the LED lighting industry is booming, is an excellent opportunity, but not all companies can share the glory. The profit growth brought about by the expansion of the M&A expansion has been evident in the first half of this year. Liad, Lianjian Optoelectronics and other companies have benefited a lot. Liard’s semi-annual performance forecast indicates that during the reporting period, the performance range increased by Beijing Liade Video Technology Co., Ltd. (the Beijing Interconnected Yida Technology Co., Ltd. acquired by the company in November 2013). June results, Shenzhen Jinda Lighting Co., Ltd. (has been completed in May 2014) May-June performance. For Lianjian Optoelectronics, 70% of the growth in performance was mainly due to the acquisition of Sichuan Timeshare Advertising Media Co., Ltd., which began to be included in the consolidated statement in May, resulting in a net profit increase of 20 million to 21 million yuan. The total profit is only 3,000-32 million yuan. The continued fierceness of the export market has also added a lot to the performance of listed companies in the first half of the year. The relevant person in charge of Zhouming Technology said that in the first half of the year, the company increased its expansion and investment in the foreign trade market. The export orders increased significantly compared with the same period of last year, and the export income also increased accordingly. In the first half of the year, LED lighting business revenue growth is expected to be close to 95, and the overall situation has remained stable. Zhang Haozhong, deputy general manager of Sunlight Lighting, a member of the G20-LED Lighting Summit, revealed that the company has increased its revenue by continuously strengthening its overseas markets in Europe, Oceania and the United States. However, it is worth noting that in the first half of the year, there were still many companies' non-recurring gains and losses and government subsidies accounting for a large proportion of the company's net profit. This also shows that during the period of rapid growth in LED demand, competition is more intense, and some enterprises are profitable. The ability has not improved significantly.