Two-in-one technic of Morgan '8+4'high-line mill milling round steel and ribbed steel bars

A ribbed steel bar, two-in-one technology, applied in the direction of metal rolling, rolling force/roll gap control, etc., can solve the problems of decreased production stability, increased product failure rate, and difficulty in achieving negative rolling

Inactive Publication Date: 2007-12-05
SHANDONG SHIHENG SPECIAL STEEL GROUP
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two sets of pass systems have great constraints on the production of the production line: 1. The replacement of the pass system takes a long time, at least 4 hours for each replacement, and at least 4 times per month, it takes 32 hours, It takes 384 hours throughout the year, the machine-hour output is 94.6t/h, and the annual output is reduced by 36326t; 2. The reserve of process parts is huge, because the two sets of pass systems from 14# to 26# all use two sets of roller ring guide

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Concrete mode of operation of the present invention is:

[0030] 1. Use Φ5.5mm round steel pass to roll Φ6mm ribbed steel bars: the first 18# material shape adopts Φ5.5mm material shape size, 19# roll gap is enlarged by 0.25mm, 26# roll gap is enlarged by 0.26mm, Φ6mm belt The size of the rib reinforcement reduction and sizing is 7.3±0.02mm×7.1±0.02mm.

[0031] 2. Use Φ6.5mm round steel pass to roll Φ8mm ribbed steel bar: 1#~10# adopt Φ6.5mm material size, enlarge 11#, 12#, 13#, 14# material, make 14# material Dimensions changed from 25.7±0.02mm×25.7±0.02mm to 28±0.02mm×27.5±0.02mm (lack of 11#, 12#, 13# enlarged size or enlarged technical requirements); enlarge 15#~18# material , so that the size of 18# material changes from 17.1±0.02mm×17.1±0.02mm to 18±0.02mm×17.5±0.02mm (lack of 15#, 16#, 17# enlarged size or enlarged technical requirements); enlarge 19 #~24# material, make the size of 24# material change from 8.84±0.02mm×8.84±0.02mm to 9.3±0.02mm×9.2±0.02mm (miss...

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 present invention relates to metallurgic technology, and is especially two-in-one pass schedule technology of rolling round bar and ribbed steel bar in an Morgan '8+4' rolling machine. According to plastic deformation theory of metal and through combining with technological practice, ribbed steel bar are rolled via allocating lengthening coefficient reasonably and enlarging the roll gap of pass schedule for rolling round bar, i. e., ribbed steel bars of 6 mm, 8 mm and 10 mm diameter are produced separately in a pass schedule of 5.5 mm, 6.5 mm and 8 mm diameter for producing round bar. The present invention has the features of saving in pass schedule replacing time, reduced faults, raised production efficiency and production stability, decreased technological spares, reduced production cost, etc.

Description

1. Technical field: [0001] The present invention relates to the technology of producing round steel and ribbed steel bar in the metallurgical industry. Specifically, under the condition of Morgan "8+4" high-line rolling mill, the pass system for producing both round steel and ribbed steel bar is combined into one. technology. 2. Background technology: [0002] For steel wire products, there are mainly two categories: round steel and ribbed steel bars. The Morgan "8+4" high-speed rolling mill provided by Morgan Company is used to produce round steel and ribbed steel bars, and it is also an advanced rolling mill at home and abroad. Since Morgan believes that only two sets of pass systems in the rolling mill can ensure that qualified round steel and qualified ribbed steel bars can be rolled out, the rolling process designed by Morgan's "8+4" high-line rolling mill consists of two sets of passes. One set is the round steel pass system for rolling round steel, and the other is ...

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): B21B1/16B21B37/58
Inventor 王长生肖立军乔明亮张红雁
Owner SHANDONG SHIHENG SPECIAL STEEL GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap