CN104498801A - TiC-system steel-bonded hard alloy - Google Patents
TiC-system steel-bonded hard alloy Download PDFInfo
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- CN104498801A CN104498801A CN201410746464.7A CN201410746464A CN104498801A CN 104498801 A CN104498801 A CN 104498801A CN 201410746464 A CN201410746464 A CN 201410746464A CN 104498801 A CN104498801 A CN 104498801A
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Abstract
The invention relates to a TiC-system steel-bonded hard alloy which consists of the following elements in percentage by weight: 47.5-56.0% of Ti, 0.5-2.0% of Mn, 2.0-3.0% of Mo, 1.5-3.0% of Cr, 5.0-8.0% of Ni, 11.0-13.4% of C, 0.1-1.0% of rare earth and the balance of Fe. The bending strength of the alloy is higher than or equal to 1700MPa, the HRA hardness is higher than or equal to 88.0, the porosity is lower than or equal to A04B04, and high hardness and high wear resistance of the product are guaranteed while rust is prevented, corrosion resistance is good, magnetism is avoided, and the application range of the TiC-system steel-bonded hard alloy is widened.
Description
Technical field
The invention belongs to field of powder metallurgy, relate to a kind of TiC system Steel Bond Hard Alloy.
Background technology
Steel Bond Hard Alloy is as a kind of new engineering material, and its excellent properties between tool steel and Wimet and can processing and good heat treatment characteristic, makes it more and more receive the concern of material supplier author in manufacturing application.
In recent years, Steel Bond Hard Alloy is gradually to powder steel and Wimet both end extension, all well applied in precision die, wear part and mine instrument, fragmentation, desalinate and ordinary rigid alloy and and rapid steel, boundary between tool steel, market share amount is also increasing.W, Co are as rare elements simultaneously, face more and more severeer scarcity of resources, and the main hard phase of TiC system Steel Bond Hard Alloy be TiC, primary bond mutually for Fe, have very large resources advantage, this is also one of TiC system Steel Bond Hard Alloy reason of being more and more used widely.
In industries such as mine instrument, engineering machinery, TiC system Steel Bond Hard Alloy usage quantity is very little, mainly WC-Co hard alloy, and its reason is that the hardness of TiC system Steel Bond Hard Alloy is lower, and wear resistance is inadequate.Picture pricker sheet, pick, ball tooth, stud, shovel snowflake etc. use the hardness of field requirement alloy at more than HRA88.0, and dimensional precision is high, good welding performance, and some use fields also require non-corrosive under atmospheric environment simultaneously.
Make a general survey of prior art, only have less TiC system steel-bonded carbide products can reach above-mentioned means suitable, " TiC system Steel Bond Hard Alloy and preparation method thereof " as number of patent application 201110170310.4 discloses the preparation method of a kind of TiC system Steel-bonded Cemented Carbide, its composition and weight percent are: hard phase TiC (50.0 ~ 70.0) %, high mangaenese steel Binder Phase (30.0 ~ 50.0) %, wherein Mn (4.2 ~ 7.2) %, Ni (1.0 ~ 2.0) %, Mo (0.5 ~ 1.0) %, Cr (0.5 ~ 1.5) %, C (11 ~ 14) %, rare earth (0.05 ~ 0.15) %, iron is surplus.This alloy type is similar to conventional high mangaenese steel Steel Bond Hard Alloy, has higher hardness and wear resistance, and hardness can reach more than HRA88.0, and dimensional precision is good; But the performance of high mangaenese steel matrix fails well to be embodied, and affects the shock resistance of alloy; This alloy rare earth element add-on fails to improve very well the wettability of alloy less simultaneously.
And for example patent " a kind of TiC system Steel Bond Hard Alloy " (application number: 201310657224.5) disclose a kind of TiC system Steel-bonded Cemented Carbide, its composition and weight percent are: Ti 47.5 ~ 56%, Mn 6.4 ~ 8%, Ni 2.0 ~ 4.0%, Mo 0.6 ~ 1.0%, rare earth element 0.3 ~ 0.5%, C 11.6 ~ 13.5%, surplus is Fe; This alloy belongs to high mangaenese steel Steel Bond Hard Alloy, has higher hardness and wear resistance, and hardness can reach more than HRA88.0, and dimensional precision is good.But the shock resistance of this alloy is undesirable; This alloy product is oxidizable in an atmosphere simultaneously gets rusty, and solidity to corrosion is poor, affects welding property simultaneously.
Summary of the invention
For the problems referred to above, the present invention aims to provide a kind of TiC system Steel Bond Hard Alloy, and while guaranteeing high rigidity, high-wearing feature, bending strength is high, corrosion-resistant good, not easily gets rusty.
First the present invention have studied TiC system of the prior art its defect Producing reason of Steel Bond Hard Alloy.The TiC system Steel Bond Hard Alloy of the number of patent application 201110170310.4 introduced in the introduction, containing higher Mo, Cr in its alloy, and Mo, Cr add with the form of carbide, but incorporate in matrix in alloy production process and form intermetallic compound.Because Mo, Cr reduce austenitic area element, alloy can be made finally can not to obtain uniform austenite completely, therefore have impact on its shock resistance.
Another number of patent application introduced in the introduction is the TiC system Steel-bonded Cemented Carbide of 201310657224.5, its alloy is owing to there being the Mn of high level, product subsurface Mn content can be caused to volatilize too much because Mn fusing point is low when product sinters, birth local is uneven causes product, have impact on the shock resistance of alloy.
On the basis of above-mentioned research, concrete technical scheme of the present invention is: a kind of TiC system Steel Bond Hard Alloy, following elementary composition by by weight percentage: Ti 47.5 ~ 56.0wt%, Mn 0.5 ~ 2.0wt%, Mo 2.0 ~ 3.0wt%, Cr 1.5 ~ 3.0wt%, Ni 5.0 ~ 8.0wt%, C 11.0 ~ 13.4wt%, rare earth 0.1 ~ 1.0wt%, Fe are surplus.
This alloy selects TiC powder, ferromanganese powder, nickel powder, molybdenum powder, ferrochrome powder, iron powder when preparing burden.
Each raw material additional proportion is respectively: TiC 60.0 ~ 70.0wt%, ferromanganese powder 0.6 ~ 2.5wt%, Mo 2.0 ~ 3.0wt%, ferrochrome powder 2.5 ~ 5.0wt%, Ni 5.0 ~ 8.0wt%, rare earth 0.1 ~ 1.0wt%, Fe are surplus.
The rare earth element added is Y, Ce or La.
The preparation method of TiC system of the present invention Steel Bond Hard Alloy, comprises the following steps: by described component and per-cent batching, wet-milling, spraying dry, compression moulding and sintering.
Contact material during alloy sintering selects zirconium white, magnesium oxide or aluminum oxide, and it can make sheet material, also can coating use on graphite boat.Preferred sintering temperature is 1400 ~ 1420 DEG C.
The present invention is is hard phase with titanium carbide, take austenitic stainless steel as the Steel Bond Hard Alloy of matrix, bending strength >=the 1700MPa of alloy, HRA hardness >=88.0, porosity≤A04B04, can also be antirust while the high rigidity, high-wearing feature of guarantee product, solidity to corrosion is good, nonmagnetic, expands TiC system Steel Bond Hard Alloy and uses field.
Accompanying drawing explanation
Fig. 1 TiC system of the present invention Steel Bond Hard Alloy 800 times of metallographs.
Fig. 2 TiC system of the present invention Steel Bond Hard Alloy 1500 times of metallographs.
Fig. 3 TiC of the present invention system's Steel Bond Hard Alloy and the antirust comparison diagram of high-manganese steel-base alloy product, right side is TiC system of the present invention Steel Bond Hard Alloy, and left side is high-manganese steel-base product.Wherein antirust test condition is: temperature 15 to 20 degrees Celsius, places 6 hours under the condition that rainwater drenches.
Fig. 4 TiC of the present invention Steel Bond Hard Alloy and the antirust comparison diagram of high-manganese steel-base alloy product, right side is TiC system of the present invention Steel Bond Hard Alloy, and left side is high-manganese steel-base product.Wherein antirust test condition is: temperature 15 to 20 degrees Celsius, places 72 hours under the condition that rainwater drenches.
Embodiment
By certainweight per-cent (i.e. wt%, following examples are all identical) TiC, ferromanganese powder, Ni powder, Mo powder, ferrochrome powder, several powder such as the iron of rare earth and surplus are prepared burden by table 1 requirement, take hard alloy bar as grinding element, ratio of grinding media to material is 6:1, take alcohol as medium wet-milling discharging after 32 hours, then spray-drying process is carried out, then compression moulding, finally carry out one sintering, concrete sintering parameter is in table 2, obtain surfacing, indeformable TiC system Steel Bond Hard Alloy, the chemical composition of obtained TiC system Steel Bond Hard Alloy is in table 3, alloy property is in table 4, structure is as Fig. 1, 2, rust-proof effect is as Fig. 3, 4.
The each proportioning raw materials unit of each embodiment of table 1: wt%
| TiC | Ferromanganese powder | Mo | Ni | Ferrochrome powder | Rare earth | Fe | |
| Embodiment 1 | 60 | 2.5 | 3.0 | 8.0 | 5.0 | 1.0 | Surplus |
| Embodiment 2 | 65 | 1.5 | 2.5 | 6.5 | 3.7 | 0.6 | Surplus |
| Embodiment 3 | 70 | 0.75 | 2.0 | 5.0 | 2.5 | 0.1 | Surplus |
The each embodiment sintering parameter of table 2
| Sintering temperature (DEG C) | Soaking time (h) | Contact material | |
| Embodiment 1 | 1400 | 1 | Magnesium oxide |
| Embodiment 2 | 1410 | 1 | Aluminum oxide |
| Embodiment 3 | 1420 | 1 | Zirconium white |
The chemical composition unit of the Wimet that each embodiment of table 3 obtains: wt%
| Ti | Mn | Mo | Ni | Cr | C | Rare earth | Fe | |
| Embodiment 1 | 47.5 | 2.0 | 3.0 | 8.0 | 3.0 | 11.3 | 1.0 | Surplus |
| Embodiment 2 | 52.0 | 1.2 | 2.5 | 6.5 | 2.2 | 12.4 | 0.6 | Surplus |
| Embodiment 3 | 56.0 | 0.5 | 2.0 | 5.0 | 1.5 | 13.4 | 0.1 | Surplus |
The performance of the Wimet that each embodiment of table 4 obtains
Claims (7)
1. a TiC system Steel Bond Hard Alloy, it is characterized in that: following elementary composition by by weight percentage: Ti 47.5 ~ 56.0 wt%, Mn 0.5 ~ 2.0wt%, Mo 2.0 ~ 3.0wt%, Cr 1.5 ~ 3.0wt%, Ni 5.0 ~ 8.0wt%, C 11.0 ~ 13.4wt%, rare earth 0.1 ~ 1.0wt%, Fe are surplus.
2. TiC system according to claim 1 Steel Bond Hard Alloy, is characterized in that: select TiC powder, ferromanganese powder, nickel powder, molybdenum powder, ferrochrome powder, iron powder during batching.
3. TiC system according to claim 2 Steel Bond Hard Alloy, it is characterized in that: each raw material additional proportion is respectively: TiC 60.0 ~ 70.0wt%, ferromanganese powder 0.6 ~ 2.5wt%, Mo 2.0 ~ 3.0wt%, ferrochrome powder 2.5 ~ 5.0wt%, Ni 5.0 ~ 8.0wt%, rare earth 0.1 ~ 1.0wt%, Fe are surplus.
4. according to the TiC system Steel Bond Hard Alloy one of claim 1 ~ 3 Suo Shu, it is characterized in that: the rare earth element added is Y, Ce or La.
5. a preparation method for one of claim 1 ~ 4 described TiC system Steel Bond Hard Alloy, is characterized in that comprising the following steps: by described component and per-cent batching, wet-milling, spraying dry, compression moulding and sintering.
6. the preparation method of TiC system Steel Bond Hard Alloy according to claim 4, is characterized in that contact material when sintering is zirconium white, magnesium oxide or aluminum oxide.
7. the preparation method of TiC system Steel Bond Hard Alloy according to claim 4 or 5, is characterized in that sintering temperature is 1400 ~ 1420 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624511A (en) * | 2016-03-11 | 2016-06-01 | 河源泳兴硬质合金有限公司 | Tungsten-carbide titanium-based steel-bonded hard alloy and preparation method thereof |
| CN111826570A (en) * | 2020-07-23 | 2020-10-27 | 矿冶科技集团有限公司 | High-temperature-resistant and high-wear-resistant nickel-based titanium carbide powder and preparation method thereof |
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| FR2465790A1 (en) * | 1979-09-18 | 1981-03-27 | Thyssen Edelstahlwerke Ag | Wear resistant titanium carbide compacts with steel matrix - which provides low sintering temp. and prods. suitable for all types of tools and dies |
| CN102230119A (en) * | 2011-06-23 | 2011-11-02 | 株洲硬质合金集团有限公司 | TiC system steel-bonded carbide and preparation method thereof |
| CN102383022A (en) * | 2011-11-14 | 2012-03-21 | 王华彬 | Method for preparing high-TiC-content iron base metal ceramic material through combustion synthesis |
| CN102409191A (en) * | 2011-11-14 | 2012-04-11 | 王华彬 | Sintered preparation method of iron-based metal ceramic material with high TiC content |
| CN102492887A (en) * | 2011-12-26 | 2012-06-13 | 株洲硬质合金集团有限公司 | TiC steel-bonded cemented carbide and its manufacturing method |
| CN103627943A (en) * | 2013-12-09 | 2014-03-12 | 株洲硬质合金集团有限公司 | TiC series steel bond hard alloy |
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2014
- 2014-12-09 CN CN201410746464.7A patent/CN104498801B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2465790A1 (en) * | 1979-09-18 | 1981-03-27 | Thyssen Edelstahlwerke Ag | Wear resistant titanium carbide compacts with steel matrix - which provides low sintering temp. and prods. suitable for all types of tools and dies |
| CN102230119A (en) * | 2011-06-23 | 2011-11-02 | 株洲硬质合金集团有限公司 | TiC system steel-bonded carbide and preparation method thereof |
| CN102383022A (en) * | 2011-11-14 | 2012-03-21 | 王华彬 | Method for preparing high-TiC-content iron base metal ceramic material through combustion synthesis |
| CN102409191A (en) * | 2011-11-14 | 2012-04-11 | 王华彬 | Sintered preparation method of iron-based metal ceramic material with high TiC content |
| CN102492887A (en) * | 2011-12-26 | 2012-06-13 | 株洲硬质合金集团有限公司 | TiC steel-bonded cemented carbide and its manufacturing method |
| CN103627943A (en) * | 2013-12-09 | 2014-03-12 | 株洲硬质合金集团有限公司 | TiC series steel bond hard alloy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624511A (en) * | 2016-03-11 | 2016-06-01 | 河源泳兴硬质合金有限公司 | Tungsten-carbide titanium-based steel-bonded hard alloy and preparation method thereof |
| CN111826570A (en) * | 2020-07-23 | 2020-10-27 | 矿冶科技集团有限公司 | High-temperature-resistant and high-wear-resistant nickel-based titanium carbide powder and preparation method thereof |
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