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Pipe crystallizer and continuous-casting and continuous-rolling pipe production line

A technology of continuous casting, continuous rolling and crystallizing, applied in metal rolling, metal rolling, metal rolling stands, etc., can solve problems such as energy waste, achieve investment economy, improve metal yield, and reduce production costs Effect

Active Publication Date: 2017-02-22
BEIJING JINGCHENG RUIXINCHANGCAI ENG TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of serious waste of energy in existing seamless steel pipe production methods, the present invention provides a pipe crystallizer and continuous casting and rolling pipe production line. In the intermediate link of billet cooling and reheating, continuous casting and rolling are directly connected closely, and a short process process of continuous casting, rolling and sizing is proposed, which is economical, efficient, energy-saving and environmentally friendly

Method used

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  • Pipe crystallizer and continuous-casting and continuous-rolling pipe production line
  • Pipe crystallizer and continuous-casting and continuous-rolling pipe production line
  • Pipe crystallizer and continuous-casting and continuous-rolling pipe production line

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A pipe crystallizer, comprising an outer component 306 and an inner component 310 (which may be called an outer mold and an inner mold respectively), the outer component 306 is sleeved outside the inner component 310, and a lower end is formed between the outer component 306 and the inner component 310 An open annular cavity, the external assembly 306 contains an open hot top 305 and a lower cylinder correspondingly connected up and down, the open hot top 305 is funnel-shaped, and a graphite ring 307 is provided at the connection between the open hot top 305 and the lower cylinder , the graphite ring 307 is located on the inner surface of the external assembly 306, the open hot top 305 is provided with a metal shield 308, and the external assembly 306 is provided with an induction coil 303 (also called a magnetic field generator), which is used to conduct the molten metal 304 Electromagnetic stirring, such as figure 2 shown.

[0036] In this embodiment, the upper part...

Embodiment 2

[0048] This embodiment is a preferred improvement to Embodiment 1. The continuous casting and rolling pipe production line includes a tundish 2, a crystallizer 3, and a pipe rolling mill 5 arranged sequentially from top to bottom. The mold 3 is the above-mentioned pipe crystallizer.

[0049] The continuous casting and rolling pipe production line also includes a steel ladle 1 arranged above the tundish 2, and a traction pinch roll 4 is arranged between the crystallizer 3 and the pipe rolling mill 5. The bending roller column 6, the sizing unit 8, the hot flying saw 7 and the cooling bed 9 below the pipe machine 5, such as Figure 6 shown.

[0050] After the hot flying saw 7 is moved to the sizing unit 8, the finished pipe after sizing is rapidly and synchronously sawed by the hot flying saw 7, and then enters the cooling bed 9, which eliminates the cutting of the steel pipe caused by the sizing process itself. Tail loss improves metal yield.

[0051] The rest of the technic...

Embodiment 3

[0053] This embodiment is a preferred improvement to Embodiment 1. The continuous casting and rolling pipe production line includes a tundish 2, a crystallizer 3, and a pipe rolling mill 5 arranged sequentially from top to bottom. The mold 3 is the above-mentioned pipe crystallizer.

[0054] The continuous casting and rolling pipe production line also includes a steel ladle 1 arranged above the tundish 2, and a traction pinch roll 4 is arranged between the crystallizer 3 and the pipe rolling mill 5. The guide roller 10 below the pipe machine 5, the hot flying saw 7, the turning disk 102, the sizing unit 8 and the cooling bed 9, the turning disk 102 can turn the waste pipe section 101 from the upright state to the horizontal state, as Figure 7 shown.

[0055] After the hot flying saw 7 is moved to the pipe rolling mill 5, and guide rollers 10 are added in between, the waste pipe section 101 sawn off by the hot flying saw 7 is clamped by the clamping roller 103 on the turning ...

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Abstract

The invention provides a pipe crystallizer and a continuous-casting and continuous-rolling pipe production line. The pipe crystallizer comprises an outer component (306) and an inner component (310); the outer component (306) comprises an open hot top (305) and a lower barrel which are vertically correspondingly connected; the open hot top (305) is funnel-shaped; a graphite ring (307) is arranged in the position where the open hot top (305) and the lower barrel are connected and is located on the inner surface of the outer component (306); a metal shielding cover (308) is arranged outside the open hot top (305); and an induction coil (303) is arranged outside the outer component (306). With the pipe crystallizer and the continuous-casting and continuous-rolling pipe production line, the intermediate link for pipe blank cooling and reheating with energy consumed for no reason is abandoned, continuous casting and pipe rolling are directly and closely joined, the short-process technology for continuous casting, pipe rolling and sizing is put forward, and the economical, efficient, energy-saving and environment-friendly effects are realized.

Description

technical field [0001] The invention relates to the field of rolling equipment, in particular to a pipe crystallizer, and a continuous casting and rolling pipe production line containing the pipe crystallizer. Background technique [0002] At present, the production of seamless steel pipes generally adopts continuous casting round billets. During rolling, the round billets need to go through main processes such as heating, piercing, rolling, reducing / sizing, and cooling to obtain finished pipes. The round billet coming out of the continuous casting production line is cooled to normal temperature and then heated to the piercing temperature, which is a great waste of energy and consumption. Not only the energy consumption is serious, but also the environment is deteriorated. Contents of the invention [0003] In order to solve the problem of serious waste of energy in existing seamless steel pipe production methods, the present invention provides a pipe crystallizer and con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/04B21B1/46B21B13/20B21B15/00
CPCB21B1/463B21B13/20B21B15/0007B22D11/006B22D11/04
Inventor 丁军
Owner BEIJING JINGCHENG RUIXINCHANGCAI ENG TECH
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