Manufacturing technology of integrated forged steel piston

A manufacturing process and integrated technology, applied in the direction of pistons, engine components, machines/engines, etc., can solve the problems of the danger of engine cylinder pulling, the welding seam cannot be cleaned, energy waste and other problems, meet the requirements of welding equipment is not high, reduce equipment cost The effect of inputting and improving the cooling effect

Inactive Publication Date: 2017-02-22
BINZHOU DONGHAILONG PISTON
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The welding seam in the closed oil chamber of this welding method cannot be cleaned, and hard particles will fall off during the vibration of the cooling oil, which may cause the risk of engine scuffing
In addition, friction welding has a huge investment and consumes a lot of electric energy, resulting in a waste of energy.
In addition, if the friction welding head and skirt cannot stop rotating instantly, it will cause welding defects, which will cause the head and skirt to detach during use, resulting in damage to the engine or even the scrapping of the entire locomotive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Manufacturing technology of integrated forged steel piston
  • Manufacturing technology of integrated forged steel piston

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] In order to clearly illustrate the technical characteristics of this solution, the following will describe this solution through specific implementation modes and in conjunction with the accompanying drawings.

[0054] A manufacturing process for a one-piece forged steel piston, rough machining the forged piston head 1 and piston skirt 2, and then brazing the piston head 1 and piston skirt 2, specifically, the forged rough machining of the piston head 1 and piston skirt 2, apply borax flux on the welding area of ​​the piston head 1, assemble the piston head 1 and piston skirt 2 together and heat them, after the heating is completed, take out the workpiece and make it Allow to cool naturally.

[0055] The manufacturing process of this monolithic forged steel piston comprises the following steps successively:

[0056] (1) Rough machining of forged piston head 1 and piston skirt 2;

[0057] (2) The cylindrical surface 4 and the plane 5 of the piston head 1 are plated wit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a manufacturing technology of an integrated forged steel piston. The manufacturing technology comprises the steps of carrying out rough machining on a forged piston head part and a piston skirt part; smearing a borax soldering flux on a welding area of the piston head part; assembling the piston head part and the piston skirt part, and carrying out heating; and after heating, taking out a workpiece, and naturally cooling the workpiece. After the technology is adopted, weld joints generated through piston friction welding are avoided, the risk that hard grains falling due to the fact that the weld joints are washed through cooling oil are liable to scratch a cylinder of an engine is reduced, the piston head part and the piston skirt part are welded through adopting brazing, the technology is simple, the equipment investment is low, and multiple same or different products can be welded at a time.

Description

technical field [0001] The invention relates to a manufacturing process of a piston, in particular to a manufacturing process of an integral forged steel piston. Background technique [0002] In the past ten years, engine design and manufacturing technology have been rapidly improved, especially diesel engines are developing towards high power and high load, and the degree of strengthening has been continuously improved. The explosive force has exceeded 20MPa, and the aluminum piston has been difficult to meet the engine requirements. So now many companies are choosing steel materials to replace aluminum alloy materials, especially the development of forged steel piston materials has indicated the current direction of piston development. The piston skirt is manufactured separately. Due to the large difference in wall thickness of the piston skirt, the casting rejection rate is high, which increases the cost, and it is difficult to form a closed oil chamber, and the cooling e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F02F3/00F02F3/18B23P15/10
CPCF02F3/003B23P15/10F02F3/18F02F2003/0038F02F2200/11
Inventor 张伟斌刘建军纪金雨
Owner BINZHOU DONGHAILONG PISTON
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap