CN101876025A - Production method of low alloy bucket teeth - Google Patents
Production method of low alloy bucket teeth Download PDFInfo
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- CN101876025A CN101876025A CN 201010225640 CN201010225640A CN101876025A CN 101876025 A CN101876025 A CN 101876025A CN 201010225640 CN201010225640 CN 201010225640 CN 201010225640 A CN201010225640 A CN 201010225640A CN 101876025 A CN101876025 A CN 101876025A
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- molten iron
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- bucket tooth
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a production method of low alloy bucket teeth, which comprises the steps of: putting iron into an electric induction furnace for melting into melted iron firstly; deslagging the melted iron and adding the following components in percentage by weight in the melted iron: C: 3.3-3.7; silicon: 0.4-0.7; Mn: 5-7; P: more than 0.07; Cr: 0.6-0.9; and V: 0.15-0.3; casting to form the bucket teeth; and putting the as-cast bucket teeth in water for quenching to completely eliminating as-cast structures. Therefore, the production method of the low alloy bucket teeth has the advantages of low production cost, high yield strength and initial hardness and the like.
Description
Affiliated technical field the present invention relates to a kind of preparation method of alloy material, particularly relates to a kind of preparation method of low alloy bucket teeth.
Background technology bucket tooth genus digs hole machine spare and accessory parts, generally be contained in and dig hole mechanical shovel bucket front end, be widely used in industries such as mine, metallurgy, electric power, building materials, cement, machinery, directly contact with materials such as ore, sand, rocks, when the contact material, flecition is born in the effect that both withstood shocks again.In the working process, the bucket tooth tip is subjected to bigger impact slip abrasive wear, and the various ditch dug with a plow of the normal appearance in surface, tip, distortion cause surface abrasion.The domestic large-scale hole machine that digs is used import material 20CrNi2Mo more, and cost is higher.A kind of like this preparation method of bucket tooth is disclosed in the market, be characterized in: comprise the multiple element of iron, carbon, silicon, manganese and phosphorus, to cast good bucket tooth then is to carry out quench treatment in the entry, this bucket tooth has toughness and hardness preferably, but because wherein the content of manganese is higher, therefore, its cost is higher, energy consumption is bigger.
Summary of the invention the purpose of this invention is to provide the preparation method of the low alloy bucket teeth that a kind of cost is lower, energy consumption is little.
For achieving the above object, the preparation method of low alloy bucket teeth of the present invention may further comprise the steps: iron is put into be smelted into molten iron in the induction furnace earlier, then after going out molten iron and removing slag with following each component (weight %) carbon 3.3～3.7, silicon 0.4～0.7, manganese 5～7, phosphorus＜0.07, chromium 0.6～0.9, vanadium 0.15～0.3 is put in the molten iron and is poured into bucket tooth, will become the bucket tooth of as cast condition to put into water more, quench, eliminate as-cast structure fully.
Described as cast condition bucket tooth temperature is 950～980 ℃.
The temperature of described water is 30～35 ℃.
Added manganese, chromium, v element in preceding 5～8 minutes in the molten iron casting.
Because in all multielements, chromium, vanadium and carboritride have the effect of intensive forming core, the present invention adds chromium, vanadium jointly, has obviously improved the yield strength and the original hardness of steel alloy, shows the impelling strength＞55J/cm of low alloy bucket teeth through actual measurement
2, hardness (HRC) 38～45.For preventing manganese, chromium, v element, need to add in preceding 5～8 minutes in the molten iron casting by scaling loss.Again because the content of manganese is less, so cost is also lower; Simultaneously, because bucket tooth also has 950～980 ℃ temperature when as cast condition, make full use of this temperature and carry out shrend, thereby saved the required heating installation of prior heat treatment, therefore greatly reduce cost of investment, saved a large amount of energy, shortened the production cycle and reduced labor strength.
The present invention is described in further detail below in conjunction with embodiment.
Embodiment
Embodiment 1: iron is put into be smelted into molten iron in the induction furnace earlier, then after going out molten iron and removing slag with following each component carbon 3.3%, silicon 0.7%, manganese 5%, phosphorus 0.06%, chromium 0.9%, vanadium 0.15%, join in the molten iron and pour into bucket tooth, to become the bucket tooth of as cast condition to put into water more, quench, eliminate as-cast structure fully, described as cast condition bucket tooth temperature is 951 ℃, and the temperature of described water is 30 ℃; Cast at molten iron and to add manganese, chromium, v element in preceding 5 minutes.
Embodiment 2: iron is put into be smelted into molten iron in the induction furnace earlier, then after going out molten iron and removing slag with following each component carbon 3.7%, silicon 0.4%, manganese 7%, phosphorus 0.07%, chromium 0.6%, vanadium 0.3%, join in the molten iron and pour into bucket tooth, to become the bucket tooth of as cast condition to put into water more, quench, eliminate as-cast structure fully, described as cast condition bucket tooth temperature is 980 ℃, and the temperature of described water is 35 ℃; Cast at molten iron and to add manganese, chromium, v element in preceding 6 minutes.
Embodiment 3: iron is put into be smelted into molten iron in the induction furnace earlier, then after going out molten iron and removing slag with following each component carbon 3.6%, silicon 0.5%, manganese 6%, phosphorus 0.05%, chromium 0.8%, vanadium 0.2%, join in the molten iron and pour into bucket tooth, to become the bucket tooth of as cast condition to put into water more, quench, eliminate as-cast structure fully, described as cast condition bucket tooth temperature is 970 ℃, and the temperature of described water is 34 ℃; Cast at molten iron and to add manganese, chromium, v element in preceding 7 minutes.
Embodiment 4: iron is put into be smelted into molten iron in the induction furnace earlier, then after going out molten iron and removing slag with following each component carbon 3.5%, silicon 0.6%, manganese 5.5%, phosphorus 0.04%, chromium 0.7%, vanadium 0.25%, join in the molten iron and pour into bucket tooth, to become the bucket tooth of as cast condition to put into water more, quench, eliminate as-cast structure fully, described as cast condition bucket tooth temperature is 960 ℃, and the temperature of described water is 33 ℃; Cast at molten iron and to add manganese, chromium, v element in preceding 8 minutes.
Embodiment 5: iron is put into be smelted into molten iron in the induction furnace earlier, then after going out molten iron and removing slag with following each component carbon 3.4%, silicon 0.6%, manganese 6.5%, phosphorus 0.03%, chromium 0.6%, vanadium 0.2%, join in the molten iron and pour into bucket tooth, to become the bucket tooth of as cast condition to put into water more, quench, eliminate as-cast structure fully, described as cast condition bucket tooth temperature is 955 ℃, and the temperature of described water is 32 ℃; Cast at molten iron and to add manganese, chromium, v element in preceding 5 minutes.
Claims (4)
1. the preparation method of a low alloy bucket teeth is characterized in that, may further comprise the steps: iron is put into be smelted into molten iron in the induction furnace earlier, then after going out molten iron and removing slag with following each component (weight %) carbon 3.3～3.7, silicon 0.4～0.7, manganese 5～7, phosphorus＜0.07, chromium 0.6～0.9, vanadium 0.15～0.3 joins in the molten iron and pours into bucket tooth, will become the bucket tooth of as cast condition to put into water more, quench, eliminate as-cast structure fully.
2. the preparation method of low alloy bucket teeth according to claim 1, it is characterized in that: described as cast condition bucket tooth temperature is 951～980 ℃.
3. the preparation method of low alloy bucket teeth according to claim 1, it is characterized in that: the temperature of described water is 30～35 ℃.
4. the preparation method of low alloy bucket teeth according to claim 1 is characterized in that: added manganese, chromium, v element in preceding 5～8 minutes in the molten iron casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010225640 CN101876025A (en) | 2010-07-09 | 2010-07-09 | Production method of low alloy bucket teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010225640 CN101876025A (en) | 2010-07-09 | 2010-07-09 | Production method of low alloy bucket teeth |
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| CN101876025A true CN101876025A (en) | 2010-11-03 |
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| CN 201010225640 Pending CN101876025A (en) | 2010-07-09 | 2010-07-09 | Production method of low alloy bucket teeth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653838A (en) * | 2012-05-10 | 2012-09-05 | 林进丰 | Method for preparing wear-resisting cast-steel bucket teeth |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2215740A (en) * | 1938-05-04 | 1940-09-24 | Battelle Memorial Institute | Alloy cast iron |
| US2488511A (en) * | 1949-01-25 | 1949-11-15 | British Cast Iron Res Ass | Nodular cast iron and the manufacture thereof |
| EP0014655A1 (en) * | 1979-02-05 | 1980-08-20 | ACIERIES THOME CROMBACK Société anonyme dite: | Process for the manufacture of grinding members of an iron alloy |
| CN1053267A (en) * | 1991-01-16 | 1991-07-24 | 河北工学院 | Casting-state troostite grinding ball |
-
2010
- 2010-07-09 CN CN 201010225640 patent/CN101876025A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2215740A (en) * | 1938-05-04 | 1940-09-24 | Battelle Memorial Institute | Alloy cast iron |
| US2488511A (en) * | 1949-01-25 | 1949-11-15 | British Cast Iron Res Ass | Nodular cast iron and the manufacture thereof |
| EP0014655A1 (en) * | 1979-02-05 | 1980-08-20 | ACIERIES THOME CROMBACK Société anonyme dite: | Process for the manufacture of grinding members of an iron alloy |
| CN1053267A (en) * | 1991-01-16 | 1991-07-24 | 河北工学院 | Casting-state troostite grinding ball |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653838A (en) * | 2012-05-10 | 2012-09-05 | 林进丰 | Method for preparing wear-resisting cast-steel bucket teeth |
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Application publication date: 20101103 |