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What are the advantages of CNC machining of radiator parts?

For friends who have been in contact with the radiator component industry, they often see or hear "CNC machining", but too much exposure does not necessarily mean that many people understand. In fact, many questions are still about CNC machining. What are the advantages? Let's take a closer look. CNC machining is an index-controlled machine tool machining, which is a method of using digital information to control the machining process. Traditional mechanical processing is done manually by machine tools. During processing, the mechanical cutter is shaken to cut metal, and the accuracy is measured with calipers and other tools. However, traditional artificial intelligence processing is far from being able to meet the needs of production development. Therefore, the emergence of CNC machining provides the possibility for the standardization, precision and efficiency of mechanical product processing. The CNC machining process in the radiator component industry also shines. The

Investment Casting Materials and Manufacturing Process

Mold material The performance of the molding material should not only ensure the convenient production of investment molds with accurate dimensions and high surface finish, good strength and light weight, but also create conditions for the manufacture of mold shells and good castings. Molding materials are generally formulated with waxes, natural resins and plastics (synthetic resins). All mold materials mainly prepared with wax materials are called wax-based mold materials, and their melting point is low, 60~70 ° C; all mold materials mainly prepared with natural resins are called resin-based mold materials, with a slightly higher melting point, about 70 °C. ~120℃. invest-casting.com   Precision Investment Castings China prototype company service include :  High Quality Investment Casting Parts Custom , Lost Wax Investment Casting Sand Casting , Lost Foam Casting , Gravity Casting , Die Casting , Graphite Casting , Casting Moldsmanufacturers . Manufacture of Folding Investments In t

알루미늄 합금 다이캐스팅의 단점을 해결하는 것이 편리합니다!

알루미늄 합금 다이캐스팅은 현재 현재의 전자제품 , 자동차 , 생활필수품 등 많은 산업과 분야에서 널리 사용되고 있습니다 . 그러나 알루미늄 합금 다이캐스팅에서 자주 발생하는 몇 가지 결함 및 해결 방법은 다음과 같습니다 .   알루미늄 합금 다이캐스팅   1. 불순물   알루미늄 합금 다이 캐스팅의 불순물 문제는 주로 특정 온도에서 알루미늄 , 규소 및 다량의 철 , 망간 , 크롬 및 기타 화합물을 포함하는 결정립과 일부 산화물로 구성됩니다 .   해결책 : 알루미늄 잉곳의 조성을 엄격하게 제어하고 , 제련로의 난로를 정기적으로 청소하고 , 정기적으로 슬래그를 처리하면 문제를 해결할 수 있습니다 .   2. 구강 문제   다공성은 다이캐스팅 부품의 내부 또는 표면에 나타나는 다양한 크기의 구멍을 말하며 , 이는 다이캐스팅 부품의 경도 부족으로 이어져 표면의 외관에 영향을 줍니다 .   Solution: 적절한 정제제를 사용하여 모공을 처리하고 , 공정을 조정하고 , 저속을 적절하게 줄이고 , 이형제가 너무 많이 분사되어 모공 문제가 해결되지 않는지 확인하십시오 .   3. 균열 문제   균열은 알루미늄 합금 다이캐스팅의 매트릭스가 파괴되고 , 외력의 작용에 따라 확장되는 경향이 있는 선형 또는 기타 라인인 기다란 틈이 형성되는 것을 의미합니다 .   솔루션 : 합금 조성을 올바르게 제어하고 , 냉각수 회로를 늘리고 , 알루미늄 합금 다이캐스팅의 구조를 변경하고 , 사출 위치를 변경하거나 증가시키면 해결할 수 있습니다 . PINJIN 서비스에는 다음이 포함됩니다 . 알루미늄 다이캐스팅 , 아연 다이캐스팅 , 마그네슘 다이캐스팅 , 투자 주조 , 모

Measures to reduce NO and particulate emissions at the same time become internal combustion engine research

 

In order to meet increasingly stringent emission regulations, especially the restrictions on diesel engine particulate and NO emissions, seeking measures that can simultaneously reduce NO and particulate emissions has become an important topic in internal combustion engine research. For diesel engines, it is usually used to delay fuel injection, increase fuel injection rate, high pressure injection, common rail injection system, pilot injection, multiple injection, premixed compression ignition, EGR (exhaust gas recirculation) and exhaust gas aftertreatment technology to reduce NO and particulate emissions. It is an effective way for diesel engines to use alternative fuels to reduce particulate and NO emissions. The application of alcohol fuels (such as methanol, ethanol) to diesel engines can significantly reduce NO and particulate emissions. *New research has found that dimethyl ether is a more suitable alternative fuel for diesel engines. The test results of AMOCO and Hal-Dimethyl ether on a variety of diesel engines show that dimethyl ether can achieve engine high efficiency, ultra-low emissions, soft and smokeless combustion, and can meet the most stringent European III and California Of ultra-low emission vehicles. The performance and combustion characteristics of the engine fueled with dimethyl ether are studied, and the influence of the main parameters of the combustion system on the engine performance is studied.

Fuel characteristics (1) Dimethyl ether is the simplest ether compound with molecular formula 3. The main physical and chemical properties of dimethyl ether and diesel are compared. There are only CH and CO bonds in the molecular structure of dimethyl ether, and no CC bonds. In addition, it is an oxygen-containing fuel, which helps to reduce the smoke and particles generated by combustion; at the same time, it can use a greater exhaust gas recirculation rate (EGR) , To reduce NO emissions. (2) The low calorific value of dimethyl ether is only 64.7% of diesel. In order to achieve the power of diesel engine, the circulating fuel supply of dimethyl ether must be increased. (3) The cetane number of dimethyl ether is higher than that of diesel and much higher than other alternative fuels. Therefore, it is not necessary to take combustion-supporting measures when using dimethyl ether in diesel engines. (4) The saturated vapor pressure of dimethyl ether at normal temperature and pressure is 0.5MPa. As the temperature increases, its saturated vapor pressure increases. In order to prevent the occurrence of air lock phenomenon, the pressure of the fuel supply system is much higher than that of the diesel fuel supply system. 2% castor oil is added to dimethyl ether to increase the lubricity of the fuel, but pure dimethyl ether is used in the emission test to eliminate the influence of lubricants on emissions.

The automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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