Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Solid metal calcium-aluminum cored wire and preparation method thereof

A technology of metal calcium aluminum and metal calcium, which is applied in the field of metallurgical refining steel, can solve the problems of unstable deoxidation degree and refining effect of molten steel, inclusions cannot be floated and removed in time, unreasonable design of deoxidizer, etc., and achieves remarkable desulfurization effect, Enhancement of desulfurization effect and improvement of antioxidant capacity

Active Publication Date: 2014-11-05
马鞍山中科冶金材料科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the refining process of molten steel, in order to further deoxidize and desulfurize, reduce harmful inclusions in molten steel and improve the comprehensive performance of steel, the main technology is to use aluminum to deoxidize and then perform calcium treatment, that is, to feed aluminum wire and then feed silicon-calcium wire, calcium-iron wire, pure calcium wire, etc., or after comprehensive deoxidation of molten steel, refining slag and calcareous materials are added for molten steel refining. The main technical problems of the above technologies are: the design of deoxidizer is unreasonable, and the inclusions formed by deoxidation of molten steel cannot be floated and removed in time; Additives or calcium treatment agents because of the impurity of the material bring additional inclusions and harmful elements into the steel; the deoxidation degree of molten steel and the refining effect are unstable; the ratio between the improvement of steel quality and the application cost is low (that is, the cost performance is low); Poor controllability, such as unstable control of [Als] and [Ca] / [Al] ratio in steel

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
  • Solid metal calcium-aluminum cored wire and preparation method thereof
  • Solid metal calcium-aluminum cored wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: A steel factory with a nominal capacity of 300 tons of refined ladle uses the solid metal calcium aluminum cored wire provided by the present invention, and its inner core composition and content are: Ca: 23.26%, Al: 74.65 %, the rest are trace elements of Mg and Fe, wire diameter φ30. In the molten steel refining process, the solid core metal calcium aluminum cored wire is directly fed into the molten steel with a double-channel wire feeding machine. The wire feeding speed is 90-120m / min. The molten steel is always under the refining slag layer. The average recoveries of Ca and Al were 34.55% and 50.79%, respectively.

Embodiment 2

[0023] Example 2: A steel factory with a nominal capacity of 60 tons of refined steel ladle uses the solid metal calcium aluminum cored wire of the present invention, and the composition and content of the inner core are Ca: 89.92%, Al: 7.87%, and the rest are Mg, Fe trace elements, wire diameter φ8.0, in the molten steel refining process, the solid metal calcium aluminum cored wire is directly fed into the molten steel with a general-purpose wire feeding machine, the feeding speed is 170-200m / min, the feeding process Among them, the recovery rates of Ca and Al in molten steel were 23.67% and 67.21%, respectively.

Embodiment 3

[0024] Example 3: A steel factory with a nominal capacity of 120 tons of refined steel ladle uses the solid metal calcium aluminum cored wire proposed by the present invention, and the composition and content of the inner core are Ca: 44.97%, Al: 52.89% , the rest are Mg, Fe trace elements, wire diameter φ11.5. During the refining process of molten steel, the solid metal calcium-aluminum cored wire is directly fed into the molten steel with a general-purpose wire feeding machine, and the wire feeding speed is 130-160m / min. During the feeding process, the molten steel surges under the slag layer, Ca, The average recoveries of Al were 28.72 and 59.86%, respectively.

[0025] Comparative analysis with the existing aluminum feed wire plus pure calcium wire and powder core calcium aluminum wire Ca40 / Al50:

[0026] Table 1 shows the comparative analysis of the effects of Examples 1-3 provided by the present invention and the effects of separately feeding aluminum wire and pure calc...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a solid metal calcium-aluminum cored wire and a preparation method thereof, belonging to the technical field of metallurgical refined steel. The solid metal calcium-aluminum cored wire comprises an inner core and a bright steel strip coating layer, the inner core comprises a metal calcium-aluminum or metal calcium solid round cored wire with a passivation layer on the surface and a thin aluminum layer. The preparation method comprises the steps: preparing the metal calcium-aluminum or metal calcium solid round cored wire at first, carrying out surface passivation for the cored wire, coating the thin aluminum layer on the outer surface of the prepared metal calcium-aluminum or metal calcium solid round cored wire with the passivation layer, and finally coating a bright steel strip on the outermost layer to obtain the solid metal calcium-aluminum cored wire with the diameter phi being 8-30mm. When the solid metal calcium-aluminum cored wire provided by the invention is used, the molten steel refining efficiency can be greatly increased and the refining effect is stable; and since the anti-oxidation passivation is carried out for the calcium-aluminum cored wire or calcium cored wire, and the thin metal aluminum layer is coated outside the cored wire, the storage time of the calcium-aluminum cored wire can be increased greatly.

Description

technical field [0001] The invention belongs to the technical field of metallurgical refined steel, and in particular relates to a solid metal calcium-aluminum cored wire and a preparation method thereof. Background technique [0002] At present, in the refining process of molten steel, in order to further deoxidize and desulfurize, reduce harmful inclusions in molten steel and improve the comprehensive performance of steel, the main technology is to use aluminum to deoxidize and then perform calcium treatment, that is, to feed aluminum wire and then feed silicon-calcium wire, calcium-iron wire, pure calcium wire, etc., or after comprehensive deoxidation of molten steel, refining slag and calcareous materials are added for molten steel refining. The main technical problems of the above technologies are: the design of deoxidizer is unreasonable, and the inclusions formed by deoxidation of molten steel cannot be floated and removed in time; Additives or calcium treatment agent...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/06C21C7/064
Inventor 陈来祥潘国平
Owner 马鞍山中科冶金材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com