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ABOUT USBinzhou Donghailong Piston Co., Ltd. was established in August 2003 and is located at No. 23, Zhangfu Road, Binzhou Industrial Park. The company has a registered capital of 5 million yuan and 286 employees. The company covers
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PRODUCT CENTERThe company continues to carry out technological transformation to achieve energy saving and emission reduction, and continuously adopts high-end technology and equipment from the world (Germany, Italy, Japan) to achieve prec
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NEWSThe company is committed to the research of internal combustion engine pistons for motor vehicles, and constantly strives to develop into a scale-effective, technological, export-oriented, environmental-friendly and resource-
ABOUT US
BINZHOU DONGHAILONG PISTON CO., LTD.
Binzhou Donghailong Piston Co., Ltd. started producing aluminum pistons in 2003 and steel and ductile iron pistons in 2006. It is the one of the first manufacturers in China to produce steel pistons! Donghailong now has an annual production capacity of 2 million steel pistons. By far It is the leading manufacture that can produce the world's largest diameter steel pistons, the diameter of the steel pistons produced by Donghailong ranging from 60mm to 390mm! So far, Donghailong is the only manufacturer in the world that has achieved independent production throughout the entire forging, processing, and welding industry chain! All processes from steel piston mold, forging, heat treatment, welding, to processing can be independently completed by our own factory! Donghailong Piston is the only manufacture that is awarded the title of 'National Little Giant' enterprise in China's piston industry! Donghailong Piston attaches great importance to technological innovation and it is a national high-tech enterprise, as well as a technology center in Shandong Province. Donghailong piston produces the most varieties of steel and iron pistons, with over 1500 varieties of steel and iron pistons! New product development process of Donghailong Piston is very fast, and the single variety development only takes 30 to 60 days! At present, Donghailong has more than 500 customers worldwide, and Donghailong strictly adheres to confidentiality agreements for customer product information. Only more customers can support the company's greater development! For steel piston MOQ, the required quantity is only one piece.
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Incorporation
Active Employees
Registered Capital
Company Floor Area
PRODUCT CENTER
The qualified rate of finished products has increased by 10%. Through technological transformation and the application of equipment frequency conversion system engineering, it saves about 30% electricity compared to ordinary equipment power.
DEVELOPMENT HISTORY
development path
NEWS CENTER
The company continuously undergoes technological transformation to achieve energy conservation and emission reduction, and continuously adopts high-end technology and equipment from around the world (Germany, Italy, Japan) to achieve precision manufacturing. The product grade, quality, and stability have reached a leading position in the industry
2023
02-14
Judgment method of piston knocking cylinder
Cut off oil cylinder by cylinder. Take the method of cutting off the oil cylinder by cylinder to determine the position of the knocking cylinder. If the oil is cut off to a certain cylinder, the sound decreases or disappears obviously, and when the oil supply is resumed, you can hear the obvious "click" sound, indicating that the cylinder The piston hits the cylinder.
2023
02-14
Selection and Development Trend of Engine Piston Material
The live village is called the heart of the engine. It is one of the most important parts in the engine. Its function is to bear the gas pressure and transmit it to the connecting rod through the piston pin to drive the crankshaft to rotate. When the engine is working, the piston is directly in contact with the high-temperature gas with an instantaneous temperature of 2200 degrees Celsius, and the temperature at the top reaches 300C-400C, and the temperature distribution is uneven: the top of the piston bears a large gas pressure during the power stroke, the gasoline engine reaches 4MPar5MPa, and the diesel engine Up to 8MP~9MPa, or even higher: In addition, the line speed of the reciprocating movement of the piston in the cylinder can reach llm/s~1m/s; work under such harsh conditions.
2023
02-14
Manufacturing method of internal combustion engine piston blank
The piston is called the "heart" of the internal combustion engine. It is not only closely related to the performance, emissions, and economy of the internal combustion engine, but also directly related to the reliability of the internal combustion engine; most of the existing piston structures are shown in Figure 1. The cooling oil passage 12, the ring bank 13, the piston pin hole and the skirt 14 are composed of four parts. The internal combustion engine piston works under the harsh conditions of high temperature, high pressure, high speed and poor lubrication. Serious and poor heat dissipation conditions, so the temperature of the piston is very high when it is working, especially its top can reach 600-700K; in addition, because the pressure of the gas on the top of the piston is very high, the top of the piston must bear a strong impact when it is working.
2023
02-14
Diesel generator piston connecting rod assembly
Cleverly install the piston pin. The piston pin and the pin hole are an interference fit. When installing, put the piston in water or engine oil and heat it evenly to 90°C~100°C. After taking it out, put the tie rod at an appropriate position between the holes of the piston pin seat, and then install the piston pin coated with engine oil in the predetermined direction. Insert it into the piston pin hole and the copper sleeve of the connecting rod.
CONTACT US
Tel : +86-13356282977
WhatApp：+86-13356282977
Email : dhlwuk@163.com
Add : North workshop, 300m east of the intersection of Fenghuang 4th Road and wutong 9th Road, Binbei Street, Bincheng District, Binzhou City, Shandong Province
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