3. The top of the diesel Engine Piston often has a variety of pits, and its specific shape, position and size must be adapted to the formation and combustion requirements of the diesel engine mixture.
The production process of a piston usually involves several steps, including casting, machining, heat treatment, surface treatment and assembly. MITSUBISHI Piston set,Engine piston set for MITSUBISHI,Original piston Set,Original MITSUBISHI Engine piston 1D auto parts , https://www.1dauto.com
Bearing is an important and key basic component in the equipment manufacturing industry. It directly determines the performance, quality and reliability of major equipment and main products, and is known as the "heart" component of equipment manufacturing. After years of development, China's bearing industry has formed a considerable scale, the national bearing industry in 2010 production value of about 130 billion yuan, ranking third in the world. Although the development scale of China's bearing industry has been very large, but the vast majority are concentrated in the low-end, and in the field of high-end bearing manufacturing, China still has a considerable gap compared with developed countries. Wang Quanqing, secretary general of the China Bearing Industry Association, also stated clearly that the development speed of high-end bearings in China has not kept pace with the development speed of the host. For example, China has mastered the high-speed EMU technology with its own intellectual property rights, but the bearings it supports are also basically dependent on imports. At present, most of the high-speed bearings produced by domestic bearing enterprises can only meet the trains of 150-180 kilometers, while high-speed railway bearings in Europe and America can meet the needs of trains operating at speeds of 350-400 kilometers per hour. Bearings basically rely on high-priced imports.
Based on the fact that China's high-end bearings are backward, the "plan" clearly states that it will give full play to the guiding role of industrial policies, improve industry entry barriers, and curb low-level redundant construction; give "triple-based" industries including the bearing industry, including fiscal and taxation support policies. We will implement the tax exemption policy for import of key components and raw materials, and study and formulate policies that encourage users to adopt the "triple-based" new products and new technologies. With the increase of policy support, it is believed that the bearing industry in China will usher in the spring of development, and will accelerate the localization of high-end bearings, providing a solid foundation for the complete localization of China's major equipment manufacturing.
Axis Research's hope for localization of high-end bearings Axis Research is a leading enterprise in China's high-end bearing manufacturing industry. It is located in Luoyang, an important bearing production base in China. Its production of high-end CNC machine tool bearings and electric spindles, high-power wind turbines Bearings, large transport bearings, heavy-duty helicopter bearings, bearings for large-scale thin-wall hot and cold continuous rolling mills, and long-life high-reliability auto bearing and bearing units under development, high-speed railway train bearings, and new-type urban rail bearings are all part of the “planningâ€. The list of high-speed, precision and heavy-duty bearings has been put forward. Axis Research focuses on the manufacturing and research and development of high-end bearings. Its main products include aerospace military bearings, precision machine tool bearings, high-speed motor spindles, bearing-specific process equipment, and testing instruments. The products are widely used in aerospace, military, machinery, and metallurgy. And other fields. Axis Research is also one of the few manufacturers in the world to produce spindles and spindles for precision machine tools. Its main product, P4 precision bearings, has approached well-known foreign manufacturers in terms of product performance and quality, and is about 30% lower than foreign prices. It is expected to enjoy the benefits of import substitution first.
1. Casting: The first step in the piston production process is casting. This involves pouring molten metal, such as aluminum alloy or cast iron, into a mold to form the desired piston shape.
2. Machining: Once the piston is cast, it is machined to perfect its shape and size. This involves using cutting tools, such as lathes and milling machines, to remove excess material and create the final shape of the piston.
3. Heat treatment: After processing, the piston is usually heat treated to improve its mechanical properties. This involves subjecting the piston to high temperatures and then cooling it slowly to achieve the desired level of hardness and strength.
4. Surface treatment: The piston is then subjected to surface treatment, such as anodizing or coating, to prevent wear and corrosion. Anodizing involves forming a protective oxide layer on the surface of the piston, while coating involves coating a material, such as ceramic or polymer, on the surface of the piston.
5. Assembly: Finally, the piston is assembled into a complete engine assembly with other components, such as piston rings and connecting rods.
The installation process must properly assemble the piston and other components together to ensure the normal operation and performance of the engine.
The Development of High-end Bearings in China Constrains the Development of Equipment Manufacturing
The development of high-end bearings is the top priority for localization of equipment manufacturing. “12th Five-Year Development Plan for Machinery Basic Parts, Basic Manufacturing Processes and Basic Materials Industry†will definitely drive high-speed, precision, and heavy loads with strong radiation effects. Bearings and other mechanical basic parts are the key industries for the development of the “Twelfth Five-Year Plan†period, with the focus on improving performance, reliability and longevity, and striving to bring them to or near the international advanced level. "Planning" also pointed out that under the support of policies, by 2015, the bearing industry's sales will reach 222 billion yuan, the industry's average annual growth rate will be between 12% -15%, including high-speed, precision, heavy load and other high-end Bearings will grow faster.
Piston is a reciprocating movement in the cylinder body of an automobile engine.
1. The basic structure of the piston can be divided into top, head and skirt. The top of the piston is the main part of the combustion chamber, and its shape is related to the selected combustion chamber form.
2. Gasoline engines mostly use flat-top pistons, which have the advantage of small heat absorption area.