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

Small-pipe-diameter seamless steel pipe end expanding die and using method

A seamless steel pipe, small diameter technology, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc.

Pending Publication Date: 2022-07-05
ANHUI LIANMENG MOLD IND
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to realize rapid reaming of the end of the steel pipe, avoiding the complex structure of the reaming device in the prior art, resulting in an increase in the process and cost

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
  • Small-pipe-diameter seamless steel pipe end expanding die and using method
  • Small-pipe-diameter seamless steel pipe end expanding die and using method
  • Small-pipe-diameter seamless steel pipe end expanding die and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like Figure 1 to Figure 3 As shown, it is an embodiment of the present invention, a small diameter seamless steel pipe end expansion die, comprising a die body 1 and a die core cone 2, the die core cone 2 includes a cone head 21, a die body 1 includes a single-lobe mold 11 and a mounting hole 12. The single-lobe mold 11 is provided with multiple groups and the opposite sides surround the mounting holes 12. One end of the multiple groups of single-lobe molds 11 is suitable for being installed in the steel pipe end 3. The head 21 is adapted to be installed in the mounting hole 12 and press each group of single-lobed molds 11 to expand radially.

[0039] like figure 2 As shown, the mold body 1 includes a large end portion 14 and a tip portion 13. The large end portion 14 composed of multiple sets of single-lobed molds 11 is provided with a circumferential groove outside. figure 2 A locking ring 4 is installed in the circumferential groove at the upper recess of the mi...

Embodiment 2

[0045] like Figure 4 to Figure 6 As shown, it is another embodiment of the present invention. On the basis of Example 1, the mold body 1 is limited to be composed of six sets of single-lobed molds 11, the cone head 21 is a hexahedral cone, and the mounting hole 12 is a hexagonal cone. The diameter of the face, the tip portion 13 is adapted to the inner diameter of the steel pipe end 3, and the taper of the cone head 21 and the mounting hole 12 are consistent. A main body plate 5 is installed outside the mold body 1. The main body plate 5 includes a rear cover 51, a gasket 52 and a front cover 53. The rear cover 51 and the front cover 53 are both provided with intermediate holes 54, and the diameter of the intermediate holes 54 is larger than that of the cylinder. 22 and the diameter of the tip portion 13, the rear cover 51 is arranged in parallel with the front cover 53, the large end portion 14 of the mold body 1 is installed between the front cover 53 and the rear cover 51,...

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

No PUM Login to View More

Abstract

The invention discloses a small-pipe-diameter seamless steel pipe end expanding die and a using method, the small-pipe-diameter seamless steel pipe end expanding die comprises a die body and a die core cone, the die core cone comprises a cone head, the die body comprises a plurality of sets of single-petal dies and a mounting hole, and the opposite sides of the single-petal dies surround to form the mounting hole; one end of each single-petal die is suitable for being installed in the end of the steel pipe, and the cone head is suitable for being installed in the installation hole and extruding each single-petal die to expand in the radial direction. According to the invention, the end of the steel pipe is rapidly chambered, and the increase of procedures and cost caused by the complicated structure of a chambering device in the prior art is avoided.

Description

technical field [0001] The invention belongs to the technical field of diameter-expanding molds, and in particular relates to a diameter-expanding mold for the end of a small-diameter seamless steel pipe and a method for using the same. Background technique [0002] In the steel pipe installation project, the butt connection between the steel pipes requires that the diameter and roundness of the pipe ends must meet certain technical requirements. However, at present, the directly produced steel pipe needs to be processed at the end so that the diameter and roundness of the port can meet the requirements for use. At present, only large-diameter steel pipes and small-diameter steel pipe ends are machined for diameter expansion of the known steel pipe ends. However, machining the steel pipe ends has low efficiency and reduces the strength of the steel pipe ends. [0003] Reference CN201710913924.4 A method for expanding the diameter of a pipe end to improve efficiency and redu...

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
IPC IPC(8): B21D41/02B21D37/10
CPCB21D41/028B21D37/10
Inventor 王长福陈生松濮传章孙宪华
Owner ANHUI LIANMENG MOLD IND