Forging process of rotary jacking head for seamless steel tube broaching
A technology of seamless steel pipe and process, which is applied in the field of forging technology of rotating head for hole expansion of seamless steel pipe, can solve the problems of non-wearable service life, short rotating head, and easy cracking of the head, so as to increase the service life and increase the number of steel pipes The effect of raising and lowering raw materials
Inactive Publication Date: 2011-09-21
TIANJIN TIANZHONG CAR AXLE MFG
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a forging process for rotary plug
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0019] Such as figure 1 As shown, the forging process of the rotary plug for the seamless steel pipe reaming of the present invention comprises the following steps:
[0020] Step 1, using a certain amount of steel ingots of 4Cr5MoSiV1 material to forge the blank at one time;
[0021] Step 2, performing isothermal annealing treatment on the blank for 40 hours after forging;
[0022] Step 3, using 50 common cars to carry out rough machining of the blank parts that have been subjected to the isothermal annealing treatment;
[0023] Step 4, quenching and tempering the rough-turned blank;
[0024] Step 5: Machining the quenched and tempered formed blank, the processing sequence is the guiding part, the working part, the straightening part and the shaping part.
[0025] Prefera...
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
Login to View More Abstract
The invention discloses a forging process of a rotary jacking head for seamless steel tube broaching. The process comprises the following steps of: free forging, thermal treatment, rough machining, hardening and tempering treatment and machining. Casting is changed into forging in the preparation process of the rotary jacking head, so that the internal quality of the jacking head can be changed, the service life of the jacking head is prolonged, and the frequency of replacing the jacking head is reduced. The performance of the product is improved by adding various elements. Chromium has beneficial effects on the abrasion resistance, high-temperature strength, hot hardness, toughness and hardening property of the steel, and meanwhile, the chromium melted in the matrix remarkably improves the corrosion resistance of the steel; and when the 4Cr5MoSiV1 steel contains Cr and Si, an oxide film is compact, so that the oxidation resistance and the abrasion resistance of the steel are improved. The production efficiency and the raw materials of unit consumption are greatly reduced, the number of steel tubes produced by using each jacking head is greatly promoted, 160 to 240 steel tubes are produced by each jacking head, and 0.94 to 0.98Kg of rotary jacking head is consumed in average ton of steel.
Description
technical field [0001] The invention relates to a forging process of a rotary plug, in particular to a forging process of a rotary plug for hole expansion of a seamless steel pipe. Background technique [0002] The traditional plug uses castings, the internal structure of the castings is uneven, the grains are coarse, and the service life is short. As a result, the application effect of the rotary plug is greatly reduced, the reaming of the steel pipe cannot be effectively carried out, and the production efficiency of the original product is low. The average steel pipe produced by each plug is 60 to 80 steel pipes, and the average steel consumption per ton of the rotary plug is 2.7~ 2.8Kg. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a forging process of a rotary plug that can solve the shortcomings of the traditional plug, such as easy cracking, easy deformation, non-wear resistance ...
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
Login to View More IPC IPC(8): B21J5/00
Inventor吴伯喜王凤云
OwnerTIANJIN TIANZHONG CAR AXLE MFG