Unlock instant, AI-driven research and patent intelligence for your innovation.

Device and method for correcting C-shaped steel casting

A technology for steel castings and steel plates, which is used in the field of correction and shaping of large steel castings to achieve the effects of improving correction and shaping efficiency, safety and reliability, shortening production cycles, and reducing the amount of dimensional welding repairs.

Inactive Publication Date: 2018-04-13
王志斌
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims at the deficiencies in the deformation correction technology of steel castings in the prior art, and provides a device for correcting C-shaped steel castings, which is used for the correction of large thick-walled rotary steel castings, so as to simplify the correction and shaping process of steel castings , reduce the cost of castings, and improve the efficiency and safety of orthodontic plastic surgery

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
  • Device and method for correcting C-shaped steel casting
  • Device and method for correcting C-shaped steel casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 and figure 2 Shown is the device for correcting C-shaped steel castings of the present invention, including C-shaped steel castings 1 to be corrected. The steel castings 1 are horizontally arranged on steel plates 5 with a thickness greater than 20mm. The C-shaped opening direction of the steel castings 1 Align with the outer edge of the side length of the steel plate 5, and the inner side of the C-shaped opening of the steel casting 1 is welded and fixed to the surface of the steel plate 5, and the other end is a free end. The steel plate 5 between the C-shaped openings is provided with a screw jack 4, the jack The head of 4 is against the inner side of the free end of the steel casting 1, and the steel plate 5 outside the other end of the jack 4 is fixed with a stopper 3 for abutting against the jack 4, and the inner arc of the steel casting 1 is provided with a The arc-shaped preheating pipe 2 of 1; the arc length of the preheating pipe 2 is 0.3-0....

Embodiment 2

[0028] The method for correcting C-shaped steel castings by using the above-mentioned device includes the following processes:

[0029] 1) Process preparation: Prepare a flat thick steel plate 5 with a thickness greater than 20mm and a plane size larger than the plane projection size of the C-shaped steel casting 1 according to the size of the C-shaped steel casting 1 to be shaped, and then pass through the key dimensions of the C-shaped steel casting 1, Determine whether the steel casting 1 is open or shrink, determine the amount of opening or shrink according to the processing technology diagram, and draw a line on the steel plate 5 to mark the fixed position and corrected position of the steel casting 1 on the steel plate 5 ;

[0030] 2) Place the steel casting 1 horizontally on the steel plate 5, align the C-shaped opening end of the steel casting 1 with the side length outer edge of the steel plate 5, and weld and fix the inner ring of one end of the C-shaped opening of t...

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
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a correcting and shaping technique for a large steel casting, in particular to a device and method for correcting a C-shaped steel casting. The device for correcting the C-shaped steel casting comprises the to-be-corrected C-shaped steel casting. The C-shaped steel casting is horizontally arranged on a steel plate with the thickness greater than 20 mm. The direction of C-shaped openings of the C-shaped steel casting is aligned with the side edge of the steel plate. The inner sides of one ends of the C-shaped openings of the C-shaped steel casting are welded to and fixed to the surface of the steel plate, and the other ends of the C-shaped openings are free ends. A screw jack is arranged on the steel plate between the C-shaped openings. A jacking head of the jack abuts against the inner sides of the free ends of the C-shaped steel casting in a jacking mode. A blocking block used for abutting against the jack is fixedly arranged on the steel plate of the outer side of the other end of the jack. An arc-shaped preheating pipe used for heating the steel casting is arranged at the arc top of the inner side of the C-shaped steel casting. According to the device for correcting the C-shaped steel casting, when the large C-shaped steel casting is corrected, a steel casting correcting and shaping technology can be simplified, and the casting cost is reduced, and the correcting and shaping efficiency and the safety reliability are improved.

Description

technical field [0001] The invention relates to the rectification and shaping technology of large steel castings, in particular to a device and method for correcting C-shaped steel castings. Background technique [0002] The material of large thick-walled rotary high-strength steel castings is medium-high-carbon low-alloy steel. The material mainly includes the following mass components: C: 0.30~0.35, Si≤0.6, Mn: 0.6~1.0, P≤0.025, S≤0.020, Ni≤0.4, Cr: 1.4~1.7, Mo: 0.15~0.35. The diameter of the casting is generally 5-6m, and it is divided into two halves. The single half of the steel casting is C-shaped, the maximum wall thickness is 200mm, the minimum wall thickness is 50mm, and the weight of the single half is 5t. The final mechanical properties required are: tensile strength Rm≥770MPa, yield strength Rp0.2≥525MPa, elongation ≥10%, reduction of area ≥35%, body hardness 223~300HB, room temperature impact toughness AKV≥27J. From the perspective of mechanical properties, it...

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): B21D3/10B21D37/16C21D1/30
CPCB21D3/10B21D37/16C21D1/30
Inventor 王志斌陈玉琴陈正荣程永伟黄婷婷
Owner 王志斌