Method for producing flat bulb steel

A production method and technology of bulb flat steel, applied in the direction of metal extrusion dies, etc., can solve problems such as failure to extrude smoothly

Active Publication Date: 2016-06-22
PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the conventional extrusion process and extrusion die pass design, the extrusion force required for the extrusion of this material exceeds the capacity limit of the hot extrusion equipment, and cannot be extruded smoothly.

Method used

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  • Method for producing flat bulb steel
  • Method for producing flat bulb steel
  • Method for producing flat bulb steel

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Embodiment Construction

[0028] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0029] The present invention provides a method for producing flat bulb steel, wherein the flat bulb steel 1 includes a web 12 and a ball head 11, and the production method includes using hot extrusion equipment to process the flat bulb steel 1 Rods, wherein the hot extrusion equipment includes an extruding barrel and an extrusion die 2 connected to each other, the extruding barrel is formed with a blank channel for the rod to move through, and the extruding die 2 is blocked The outlet end of the billet passage, and the end surface of the extrusion die 2 facing the billet passage is formed with a through flat bulb steel pass, and the flat bulb steel pass includes...

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Abstract

The invention discloses a method for producing flat bulb steel. Hot extrusion equipment comprises an extrusion cylinder and an extrusion mold (2) which are mutually connected; flat bulb steel hole patterns of the extrusion mold (2) comprise a web hole pattern (22) and bulb hole patterns (21) at the two ends of the web hole pattern (22), accordingly, a rod is extruded to form a flat bulb steel blank provided with two bulbs (11) by the flat bulb steel hole patterns, one of the bulbs (11) is cut off, and the flat bulb steel (1) is produced. By designing the flat bulb steel hole patterns into a form with the two bulb hole patterns and one web hole pattern, the area of the cross section of the flat bulb steel hole patterns can be increased, accordingly, required extrusion drive force is reduced, existing hot extrusion equipment can be applied to extrusion machining of materials with higher strength, the increase in cost caused by equipment improvement is avoided, the production cost can be lowered, the improvement work is simple and easy to implement, and the flat bulb steel can be quickly put into production.

Description

technical field [0001] The invention relates to a production method of special-shaped materials, in particular to a production method of bulb flat steel. Background technique [0002] Bulb flat steel is a kind of special steel, which is composed of flat web and spherical ball head. One end of the head is formed as a small end, and the bulb flat steel belongs to asymmetric steel. [0003] Bulb flat steel can be made of 00Cr21Ni14Mn5Mo3N material, which has physical properties such as good corrosion resistance, high-temperature strength and low-temperature strength, good plasticity, high toughness, large thermal expansion coefficient and low magnetic properties. It is mainly used in the manufacture of ships and ships. [0004] In the manufacturing method of spherical flat steel profiles, the bar billet can be preheated through a preheating furnace, and then the billet is heated to a suitable target temperature by an induction heating furnace, and the bar is extruded into a ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21C25/02
CPCB21C25/02B23P15/00
Inventor 苏承龙李利盛黄新琼
Owner PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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