A kind of cast iron horizontal continuous casting crystallizer and preparation method of cast iron profiles

A casting crystallizer and crystallizer technology are applied in the fields of preparing cast iron profiles and cast iron horizontal continuous casting crystallizers, which can solve the problems of lower skin of cast iron profiles and other problems, and achieve the effects of small machining allowance, good cutting performance and energy saving.

Inactive Publication Date: 2018-01-02
山西建邦集团铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a cast iron horizontal continuous casting crystallizer, which solves the problem of the lower skin of the cast iron profile prepared by the existing crystallizer

Method used

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  • A kind of cast iron horizontal continuous casting crystallizer and preparation method of cast iron profiles
  • A kind of cast iron horizontal continuous casting crystallizer and preparation method of cast iron profiles
  • A kind of cast iron horizontal continuous casting crystallizer and preparation method of cast iron profiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The Φ80mm gray cast iron profile is cast horizontally and continuously with the lower nozzle type isolation ring crystallizer.

[0050] The drain type isolation ring crystallizer adopts Figure 5 Graphite molds for the first row, and the spacer ring for the drain Figure 5 The first one in the first row, that is, the one with a semicircular cross-section. The inner hole size of the graphite mold 9 is Φ80mm. After pouring the molten gray iron incubated by floating silicon into the holding furnace, start to continuously cast Φ80mm gray cast iron profiles with double-flow horizontal continuous casting with the "pull-stop-pull" process. tons / hour.

Embodiment 2

[0052] The Φ180mm ductile iron profile is cast horizontally and continuously with the nozzle-type spacer ring mold.

[0053] The drain type isolation ring crystallizer adopts Figure 5 Graphite molds for the first row, and the spacer ring for the drain Figure 5 The third in the first row, that is, the semi-circular section. The inner hole size of the graphite mold 9 is Φ180mm. After the spheroidized molten iron is inoculated with floating silicon and poured into the holding furnace, the "pull-stop-pull" process is used to continuously cast Φ180mm ductile iron profiles horizontally in a single stream. Production 2.5 tons / hour.

Embodiment 3

[0055] The horizontal continuous casting of nodular iron profiles with a regular hexagonal cross-section of 120 mm in opposite sides is adopted with the nozzle-type spacer ring crystallizer.

[0056] The drain type isolation ring crystallizer adopts Figure 5 Graphite mold for the second row, the drain type spacer ring adopts Figure 5 The second one in the second row, that is, the intermediate section. The inner hole size of the graphite mold 9 is a regular hexagon with opposite sides of 120 mm. After the spheroidized molten iron is inoculated with floating silicon and poured into the holding furnace, the "pull-stop-pull" process is used to continuously cast ductile iron profiles with a regular hexagonal cross-section of 120 mm across sides, and the step length of the cast iron profiles is controlled at 70-90mm, single shift production 2 tons / hour.

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Abstract

The invention discloses a horizontal continuous casting crystallizer of a cast iron and a preparing method of cast iron proximate matter. The crystallizer comprises a crystallizer body; a collector nozzle type isolation ring is arranged at the front end of a high-purity graphite casting mold of the crystallizer body; according to the horizontal continuous casting crystallizer of the cast iron, the collector nozzle type isolation ring is arranged at the front end of the high-purity graphite casting mold, the blocking effect of the collector nozzle type isolation ring is used for forcing molten iron not to enter the high-purity graphite casting mold in a laminar flow manner, the molten iron must enter the high-purity graphite casting mold in a forced laminator flow manner, the high-speed washing effect generated by turbulent fluid flowing of the molten iron is sufficiently utilized, the molten iron is pushed backwards before being solidified, and the molten iron enters a forced cooling area of a water-cooled iron sleeve of the crystallizer and then is crystallized and solidified; and the surface of the cast iron proximate matter produced through the crystallizer is smooth in surface, the phenomenon of scar skin discharging is prevented from appearing, the structure is compact and uniform, hardness distribution is uniform, the mechanical property is improved to a certain degree, the cutting machining performance is good, the machining allowance is small, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of cast iron materials and casting metallurgy, and relates to a cast iron horizontal continuous casting crystallizer, and also relates to a method for preparing cast iron profiles by using the crystallizer. Background technique [0002] Cast iron horizontal continuous casting is a new technology for the production of modern high-quality cast iron blanks, and has been listed as a key promotion project of national scientific and technological achievements. "Cast Iron Horizontal Continuous Casting Technology" was identified as the 16th item in the 2003 Joint Announcement No. 23 of the State Environmental Protection Administration and the State Economic and Trade Commission [National Key Industry Clean Production Technology Guidance Catalogue], and was identified as a clean manufacturing technology project that is prioritized for development. Due to the characteristics of compact structure, fine graphite, good c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/047
CPCB22D11/0475
Inventor 徐春杰郭权芬冯港雯刘永辉张忠明
Owner 山西建邦集团铸造有限公司
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