CN209811118U - Feeder head backward extrusion tool for upsetting large electroslag remelting steel ingot - Google Patents

Abstract

The utility model belongs to the technical field of the electroslag remelting, especially, relate to a reverse crowded frock of rising head for upsetting of large-scale electroslag remelting steel ingot. Including the anti-crowded hollow punching pin and the anti-crowded overcoat that mutually support and set up, anti-crowded hollow punching pin is including the punching pin body that is cylindric setting and the anti-hole of crowded that runs through the punching pin body along the axial, anti-crowded hole upwards contracts the setting from the bottom, anti-crowded overcoat is including being the overcoat body of cylindric setting and running through the thick mound hole that the overcoat body set up, the cross-section in the vertical direction in thick mound hole is the bowl form setting of inversion, be provided with thick mound fixed slot on the lateral wall of overcoat body. The utility model discloses a large-scale electroslag remelting steel ingot is anti-crowded frock of rising head for jumping-up utilizes the anti crowded hollow punch of anti crowded and anti crowded overcoat that the cooperation set up, makes large-scale electroslag remelting steel ingot in the thick mound process, and the rising head obtains effectual restraint, and then has avoided the problem of rising head fracture to improve the quality of large-scale electroslag remelting steel ingot, ensured the yield.

Description

Feeder head backward extrusion tool for upsetting large electroslag remelting steel ingot

Technical Field

The utility model belongs to the technical field of the electroslag remelting, especially, relate to a reverse crowded frock of rising head for upsetting of large-scale electroslag remelting steel ingot.

Background

Electroslag remelting (electroslag remelting) steel is a method of melting steel using resistance heat generated when electric current is passed through slag as a heat source. The main purpose is to purify the metal and obtain a clean, uniform and compact steel ingot. The steel remelted by electroslag has high purity, low sulfur content, less non-metallic inclusions, smooth steel ingot surface, cleanness, uniformity and compactness, and uniform metallographic structure and chemical components. The as-cast mechanical property of the electroslag steel can reach or exceed the index of a forged piece of the same steel type.

At present, an upper spherical upsetting disc and a lower spherical upsetting disc are used in an upsetting process of a large high-carbon high-alloy electroslag remelting steel ingot in free forging of fine steel (steel rolling). However, the feeder end of a large high-carbon high-alloy electroslag remelting ingot has inevitable metallurgical defects, such as: shrinkage cavity, segregation, inclusion and the like cause that a large-scale electroslag ingot riser is easy to crack in the upsetting process and extends to the whole ingot body, thereby influencing the quality and reliability of the whole steel ingot.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to foretell current large-scale electroslag remelting steel ingot in the pier upsetting technology, riser department is easy to crack's technical problem, provides a reasonable in design, simple structure, low cost and can effectively avoid riser cracking's among the pier upsetting technology large-scale electroslag remelting steel ingot upsetting and crowds frock with the riser is anti-.

In order to achieve the purpose, the utility model discloses a technical scheme do, the utility model provides a large-scale electroslag remelting steel ingot is anti-crowded frock of rising head for upset, including the anti-crowded hollow punch and the anti-crowded overcoat that mutually support and set up, wherein, anti-crowded hollow punch is including the anti-hole of squeezing that is cylindric punch body that sets up and runs through the punch body along the axial, anti-hole of squeezing upwards contracts the setting from the bottom, anti-crowded overcoat is including being the overcoat body of cylindric setting and running through the thick pier hole that overcoat body set up, the cross-section of the vertical direction in thick pier hole is the bowl form setting of inversion, be provided with thick pier fixed slot on the lateral wall of overcoat body.

Preferably, the side wall of the punch body is arranged in an arc surface.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. the utility model discloses a large-scale electroslag remelting steel ingot is anti-crowded frock of rising head for jumping-up utilizes the anti crowded hollow punch of anti crowded and anti crowded overcoat that the cooperation set up, makes large-scale electroslag remelting steel ingot in the thick mound process, and the rising head obtains effectual restraint, and then has avoided the problem of rising head fracture to improve the quality of large-scale electroslag remelting steel ingot, ensured the yield.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a half-sectional view of a back-extrusion hollow punch provided in example 1;

FIG. 2 is a half-sectional view of a reverse extrusion jacket provided in example 1;

in the above figures, 1, a hollow punch is reversely extruded; 11. a punch body; 12. backward extruding the hole; 2. reversely extruding the outer sleeve; 21. a jacket body; 22. a pier hole is thickened; 23. and (5) fixing grooves of the thick piers.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1 and 2, this embodiment is intended to solve the technical problem that a riser is prone to cracking in an upsetting process of an existing large electroslag remelting steel ingot, and for this reason, this embodiment adopts a way of retracting the riser to solve the problem that the riser cracks in a upsetting process. In order to enable the riser to retract inwards, the conventional pier equipment only flattens the riser without realizing backward extrusion and inward retraction, and therefore, the embodiment provides a backward extrusion outer sleeve matched with a backward extrusion hollow punch, specifically, the riser comprises an outer sleeve body arranged in a cylindrical shape and a pier hole arranged through the outer sleeve body, the pier hole is arranged through the outer sleeve body, so that the riser can be extruded in the process of upsetting the outer sleeve body, and then the riser is extruded from the direction of the pier hole, in order to improve the pier effect, in the embodiment, the section of the pier hole in the vertical direction is in an inverted bowl-shaped arrangement, the side wall of the punch body is in an arc surface arrangement, the purpose of the arrangement is mainly to ensure the pier effect, reduce the impact pressure of the pier on the backward extrusion hollow punch, improve the use effect, and certainly, a pier fixing groove is arranged on the side wall of the outer sleeve body, for fixing on the thick pier equipment.

When in specific use: firstly, punching a hollow punch by using a reverse extrusion method, wherein the punch is punched at the riser end of a steel ingot to be 150-200 mm; and then upsetting to the size required by the process by using the reverse extrusion outer sleeve, wherein the center of the riser extends out of the pier hole in the upsetting process, so that the problem of center cracking is avoided. The implementation finds that the tool can effectively prevent the riser from cracking and improve the utilization rate of the steel ingot by about 10 percent.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (2)

1. The utility model provides a frock is extruded with rising head anti-to-squeeze to large-scale electroslag remelting steel ingot upsetting, its characterized in that, including the anti-crowded hollow impact and the anti-crowded overcoat that mutually support the setting, wherein, anti-crowded hollow impact is including the impact body that is cylindric setting and the anti-crowded hole that runs through the impact body along the axial, anti-crowded hole upwards contracts the setting from the bottom, anti-crowded overcoat is including the overcoat body that is cylindric setting and the pier hole that runs through the overcoat body setting, the cross-section of the vertical direction in pier hole is the bowl form setting of inversion, be provided with the pier fixed slot on the lateral wall of overcoat body.

2. The feeder head backward extrusion tool for upsetting the large electroslag remelting steel ingot according to claim 1, wherein the side wall of the punch body is arranged in an arc surface.