CN102304666A - Preparation method of as-cast high manganese steel jaw plate - Google Patents
Preparation method of as-cast high manganese steel jaw plate Download PDFInfo
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- CN102304666A CN102304666A CN201110272611A CN201110272611A CN102304666A CN 102304666 A CN102304666 A CN 102304666A CN 201110272611 A CN201110272611 A CN 201110272611A CN 201110272611 A CN201110272611 A CN 201110272611A CN 102304666 A CN102304666 A CN 102304666A
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- jaw plate
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention provides a preparation method of an as-cast high manganese steel jaw plate. The preparation method is characterized in that: 0.6-1.5% of rare earth elements are used to perform modification treatment on the molten high manganese steel which is smelted to the tapping temperature in a casting ladle; the molten steel is poured into a lower box, namely a heat resistant metal casting mould; after the casting is solidified, the box is opened, the casting is cooled and cleaned to obtain the as-cast high manganese steel jaw plate. The service life of the jaw plate produced by the method is increased by more than 30% in comparison with that produced by the known technology, and the production cost is reduced by 15%.
Description
Technical field:
The present invention relates to a kind of as cast condition and use the preparation method of high mangaenese steel jaw.
Background technology:
Existing technology of producing the high mangaenese steel jaw is: one, clay-bonded sand casting mold; Two, sodium silicate sand casting mold; Three, resin-bonded sand cast form; Four, lost foam casting etc.The existing shortcoming of high mangaenese steel jaw that above-mentioned four kinds of methods are produced is: because of the area of jaw is big, need the high temperature cast, and the speed of cooling of sand mold casting mold is slow, the speed of cooling of lost foam casting is slower.Therefore, make in the as cast condition high mangaenese steel jaw matrix crystal grain thick, and have a large amount of carbide to separate out, this jaw must could use after the tough processing of water.Even carbide is dissolved in the austenite through the tough processing of water, also can stay the cavity in the original shared position of carbide, cause micro-flaw, add thick crystal grain matrix, the work-ing life of obviously having reduced jaw.In addition, there is not special as cast condition to use the preparation method of high mangaenese steel jaw in the known technology yet.
Summary of the invention:
The present invention its objective is and will provide that a kind of technology is simple, production cost is low, production efficiency is high, steady quality, uses the preparation method of high mangaenese steel jaw with as cast condition.
The technical solution of the inventive method is: as cast condition is used the preparation method of high mangaenese steel jaw.Its characteristics are: earlier uses massfraction to be the processing of going bad of the rare earth alloy element of 0.6-1.5% to fused high mangaenese steel molten steel before (one) cast, purpose is that the carbide delay is separated out; (2) moulding: the flank of tooth of jaw is provided with down, and nowel is the heating resisting metal casting mold.Because the jaw monolithic molding all at nowel, makes the high mangaenese steel molten steel that pours in type can access rapid solidification, let carbide not have chance and separate out.Thereby the high mangaenese steel jaw of acquisition as cast condition austenite structure.And be the fine-grannular carbide of the fine and closely woven austenite of crystal grain+on a small quantity in taking out test block, use metallography microscope sem observation, its metallographic structure of this jaw itself.This matrix meets the metallographic standard of high mangaenese steel fully.Accomplished the task of as cast condition use high mangaenese steel jaw with this.The Chemical Composition of said high mangaenese steel is: C=0.8-1.4%, Si=0.3-0.8%, Mn=11-18%, Ti=0.02-0.15%, B=0.02-0.12%, RE=0.02-0.04%, mg=0.01-0.1%, SP＜0.04%.
The technique effect of the inventive method: the jaw of the heavy 800kg of piece that produces with present method carries out overtesting on the broken machine of 69 type jaws; And the jaw of producing with the same specification known technology contrasts; The jaw work of known technology production was changed in 20 days, and jaw work 30 talentes that the inventive method is produced change.This is by it seems that the jaw of producing than known technology in work-ing life of the jaw produced with present method improves 34%, and production cost reduces by 15%.
Embodiment: with the high mangaenese steel molten steel of melting to this tapping temperature, use the rare earth alloy element of massfraction, pour in nowel is the casting mold of heating resisting metal after the processing of in casting ladle, going bad as 0.6-1.5%.Treat to unpack, cool off, clear up behind the casting solidification, promptly obtain the high mangaenese steel jaw that as cast condition is used.
Claims (1)
1. an as cast condition is used the preparation method of high mangaenese steel jaw.Its characteristics are: with the high mangaenese steel molten steel of melting to this tapping temperature, use massfraction to be: the rare earth alloy element of 0.6-1.5% go bad in casting ladle after the processing, pours in nowel is the heating resisting metal casting mold.Treat to unpack, cool off, clear up behind the casting solidification, promptly obtain as cast condition and use the high mangaenese steel jaw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110272611A CN102304666A (en) | 2011-09-15 | 2011-09-15 | Preparation method of as-cast high manganese steel jaw plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110272611A CN102304666A (en) | 2011-09-15 | 2011-09-15 | Preparation method of as-cast high manganese steel jaw plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102304666A true CN102304666A (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110272611A Pending CN102304666A (en) | 2011-09-15 | 2011-09-15 | Preparation method of as-cast high manganese steel jaw plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN102304666A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053026A (en) * | 1990-01-05 | 1991-07-17 | 吉林工业大学 | As-cast manganese steel treating process and apparatus |
| CN1775983A (en) * | 2005-12-09 | 2006-05-24 | 长沙理工大学 | High-strength casted air-colled bainite wear-resisting steel and preparing method |
| CN101275175A (en) * | 2008-04-30 | 2008-10-01 | 昆明理工大学 | Method for performing Yt-based heavy rare earth modification on high manganese steel |
| JP2008264802A (en) * | 2007-04-17 | 2008-11-06 | Nippon Steel Corp | Method of continuous casting |
-
2011
- 2011-09-15 CN CN201110272611A patent/CN102304666A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053026A (en) * | 1990-01-05 | 1991-07-17 | 吉林工业大学 | As-cast manganese steel treating process and apparatus |
| CN1775983A (en) * | 2005-12-09 | 2006-05-24 | 长沙理工大学 | High-strength casted air-colled bainite wear-resisting steel and preparing method |
| JP2008264802A (en) * | 2007-04-17 | 2008-11-06 | Nippon Steel Corp | Method of continuous casting |
| CN101275175A (en) * | 2008-04-30 | 2008-10-01 | 昆明理工大学 | Method for performing Yt-based heavy rare earth modification on high manganese steel |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |