CN1015183B - Wear resistant alloy - Google Patents
Wear resistant alloyInfo
- Publication number
- CN1015183B CN1015183B CN 88102590 CN88102590A CN1015183B CN 1015183 B CN1015183 B CN 1015183B CN 88102590 CN88102590 CN 88102590 CN 88102590 A CN88102590 A CN 88102590A CN 1015183 B CN1015183 B CN 1015183B
- Authority
- CN
- China
- Prior art keywords
- alloy
- wear resistant
- test
- resistant alloy
- surplus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention relates to a kind of wear resistant alloy that contains carbon, silicon, manganese, chromium, titanium, zirconium, niobium and iron, it is characterized in that, its chemical ingredients (weight %) is:
C 2.38-3.50，
Si 0.01-2.50，
Mn 0.20-5.50，
Cr 18.50-40.00，
Ti 0.03-0.20，
Zr 0.02-0.48
Nb 0.05-0.16
The Fe surplus.
Description
The present invention relates to metallurgical technology, relate to the wear resistant alloy of under the abrasive material action condition, working or rather.
Be used to dig up mine, the characteristics of the various machines of building and digging operation are the intensive abrasive wears.The grinding aids abrasion resistance that increases these machine works parts both can improve these service life of a machines and reliability, reduced its repair and maintenance expense, and can save metal and electric energy.
The weight of this class part accounts for the 16%(excavator of these machine gross weights) to 80%(magma pump and sandblast pump), therefore, the requirement of these parts is reached tens thousand of tons.
The wear resistant alloy of working under strong abrasive material rubbing effect is well-known.
For example, known have a wear resistant alloy that contains following ingredients (weight %):
C 2.40-3.60;
Si 0.26-1.00;
Mn 1.50-2.50;
Cr 0.15-0.35;
Ti 0.15-0.35;
The Fe surplus.
(" cast alloy iron that supplies the property foundry goods to use " " OCT7769-82,1982).
This alloy is widely used in the hydropress of Production Example such as pumping abrasive mixt, other grinding mechanisms, scraper bowl and the sandslinger of the liner of fine coal transfer lime and coal and mineral breaker.
This hardness of alloy is HR
c48(counts the C level by Rockwell hardness), transverse modulus of rupture is 540MPa, abrasive wear is that 0.82(uses 0.25-0.35 * 10 relatively
-3M particulate black silicon carbide sheet ground one hour mutually, recently defined by the vector of the sample vector to standard sample-" main officer of Tibet Te Feier special steel "), representing plastic amount of deflection is 2.1 * 10
-3M(is with 2.0 * 10
-1M and cross section (10 * 10) * 10
-6The test of the sample of m is a benchmark).
The alloy that has above-mentioned performance when the equipment of use lacks enough reliabilities.
Also have a kind of known wear resistant alloy, it contains following ingredients (weight %):
C 2.4-3.6;
Si 0.5-1.5;
Mn 1.5-2.5;
Cr 13.0-19.0;
Cu 1.0-1.5;
Mo 0.5-2.0
The Fe surplus.
(" property foundry goods cast alloy iron " " OCT7769-82,1982) 1982).
This alloy is used to be manufactured on the part of working under the afore mentioned rules condition, and this alloy has following mechanical property: transverse modulus of rupture 490MP
a, hardness HR
c57(counts the C level by Rockwell hardness), abrasive wear is that 0.45(measures by the method for afore mentioned rules relatively), representing plastic amount of deflection is 5.0 * 10
-3M(is with 2.0 * 10
-3M and cross section (10 * 10) * 10
-6The test of m sample is a benchmark).
Alloy with such performance can not satisfy reliability that equipment proposed and the durability requirement with this alloy manufacturing fully.
Also have a kind of known alloy, it contains following ingredients (weight %):
C 4.2-6.20;
Si 0.2-0.80;
Mn 0.20-1.20;
Cr 15.0-30.0;
Nl reaches 4.00;
Cu reaches 1.50;
Mo reaches 0.75
The Fe surplus.
（，2153846）
This alloy is also worked under strong abrasive wear condition and is had following mechanical property: hardness HR
c60(counts the C level by Rockwell hardness), abrasive wear 0.48(measures as stated above relatively), representing plastic amount of deflection is 4.2 * 10
-3M(is with 2.0 * 10
-1M and cross section (10 * 10) * 10
-6The test of m sample is a benchmark).
Though this alloy has the mechanical property that is higher than above-mentioned alloy, still lack reliability in use.
Also have a kind of known wear resistant alloy, it contains following ingredients (weight %):
C 1.70-2.35;
Si 0.60-2.00;
Mn 2.80-3.90;
Cr 28.0-33.0;
Ti 0.05-0.30;
Zr 0.05-0.30;
The Fe surplus.
（，A，429129）。
This alloy is also worked under strong abrasive wear condition and is had following mechanical property: bending strength limit 900MP
a, hardness HR
c54(counts the C level by Rockwell hardness), abrasive wear 0.68(measures as stated above relatively), representing plastic amount of deflection is 2.5 * 10
-3M(is with 2.0 * 10
-1M and cross section (10 * 10) * 10
-6The specimen test of m is a benchmark).
By above-mentioned parameter as can be known, the plasticity-of this alloy, hardness and wear resistance are not enough to guarantee that the part by this alloy manufacturing works reliably and enduringly.
Task of the present invention is recently to obtain such wear resistant alloy by introducing new alloying constituent and changing over branch, and it has high intensity and plasticity-, and high abrasive material wear resistance is arranged.
Task of the present invention solves like this, even the wear resistant alloy of being recommended contains carbon, silicon, manganese, chromium, titanium, zirconium, iron, and according to the present invention this alloy also contains niobium, its composition than (weight %) is:
C 2.38-3.50;
Si 0.01-2.50;
Mn 0.20-5.50;
Cr 18.50-40.00;
Ti 0.03-0.20;
Zr 0.02-0.48;
Nb 0.05-0.16;
The Fe surplus.
The selectable qualitative composition of the wear resistant alloy of recommending and composition ratio, make this alloy in alloying (denaturing treatment) process, can obtain microstructure through after the crystallization, this microstructure comprise high alloy sosoloid and the high-strength abrasion-proof skeleton that constitutes by the Lai Shi eutectic that distributes along primary crystal boundary and be evenly distributed in crystal grain and the residing scope of subgrain in, also be evenly distributed in the high strength high diffusive phase-metal in the ledeburite and the compound of metal.In the case, make crystal grain and dendrite that variation in essence take place.
This structure can reach high strength, high strength and high abrasive material wear resistance, has good plasticity-simultaneously.
Because the effect of entropy factor makes niobium carbide niobium nitride the hardest in the alloy of being applied for be improved its concentration and the homogeneity of tissue, the reason that alloy plasticity-that Here it is improves.In this case, the stress concentration on the phase boundary of the crystal grain of removing undesirable impurity (for example sulfide and phosphide) and subgrain is just lax easily.
The effect that improves intensity, hardness and wear resistance and niobium atom have partly been replaced zirconium atom to niobium in the compound of the metal of high diffusive and metal and titanium atom is relevant, also to have improved the lattice parameter discordance of the compound of metal and metal and sosoloid relevant with niobium atom, therefore just improved the chemical stability and the physical strength of the compound and the sosoloid of metal and metal.Intensity, hardness and the wear resistance of the alloy of applying for have been improved in this case.
Content of niobium is reduced to 0.05%(weight) the following alloy strength that can cause reduces because in this case, niobium can not form the metallide lattice, and plasticity-is descended because alloy fails to reach on the concentration and structure on homogeneity fully.
Content of niobium is increased to 0.16%(weight) above will the reduction owing to embrittlement make the plasticity-of alloy, this embrittlement is owing to cross the highland and improved worsening condition that its intensity and stress relax and formed focal point of stress and cause.
With well-known alloy phase ratio, the alloy of being recommended also has the good process performance.For example, has high cracking resistance under the overheated condition in smelting and hot place amount process.This is because under the effect of niobium, and described alloy is to higher crystallization temperature one side contraction and mobile.
And this also is the reason that institute's alloy of recommending can weld with steel when adopting the common process welding.
Owing to reduced the quantity of sedimentation and pore and crackle, adopt the alloy of being recommended can obviously improve casting quality, improve liquid fluidity and fillibility in the casting mold.
The smelting of the wear resistant alloy of recommending, be to be undertaken by packing into and melting such furnace charge, this furnace charge comprises the pig iron and steel (steel scrap for example, that itself produces returns steel and analogue thereof), a certain amount of ferrochrome, manganeseirom, ferro-silicon are to guarantee reaching carbon, silicon, manganese and the chromium that meets the invention amount of being applied in needed alloy.Iron alloy that contains titanium, zirconium, niobium or master alloy are added melt with the form of pulverizing.
In order to understand the present invention better, list the following embodiment of application alloy.
Embodiment 1
The composition of wear resistant alloy (weight %) is
C 2.36，
Si 2.00，
Mn 0.80，
Cr 20.50，
Ti 0.03，
Zr 0.30，
Nb 0.08，
The Fe surplus
Be used for the outer lining on the stirring rake of stir silicon hydrochlorate and clay with this alloy manufacturing.In order to compare, to make identical part and carry out mechanical property and use properties is tested with this part with known wear resistant alloy (C2.0%, Si1.3%, Mn3.3%, Cr30.5%, Ti0.17%, Zr0.17%, Fe surplus) (, A, 429129).Test-results is listed following table in.
Embodiment 2
Wear resistant alloy composition (weight %) is:
C 3.50，
Si 2.00，
Mn 2.00，
Cr 20.00，
Ti 0.10，
Zr 0.10，
Nb 0.10，
The Fe surplus.
By the method described in the similar embodiment 1, this alloy of test on the cone of the hydraulic vortex machine that is used for petroleum drilling operation process water mud.Test-results is listed following table in.
Embodiment 3
Wear resistant alloy composition (weight %) is:
C 3.10，
Si 1.80，
Mn 2.40，
Cr 23.00，
Ti 0.20，
Zr 0.15，
Nb 0.08，
The Fe surplus.
Make the working part of sandblast pump with this alloy.Test by the method described in the similar embodiment 1 in diamond exploitation mine.Test-results is listed following table in.
Embodiment 4
Wear resistant alloy composition (weight %) is:
C 3.50，
Si 2.50，
Mn 1.80，
Cr 40.00，
Ti 0.20，
Zr 0.48，
Nb 0.05，
The Fe surplus.
Make the sloper of dreg removing system pipeline with this alloy.Test by the regulation in the similar embodiment 1 at heating station.Test-results is listed following table in.
Embodiment 5
Wear resistant alloy composition (weight %) is:
C 3.20，
Si 1.80，
Mn 3.80，
Cr 22.00，
Ti 0.10，
Zr 0.05，
Nb 0.12，
The Fe surplus.
Make the scrunching element (ball, grinding roller) of process water mud with this alloy.Test by the method described in the similar embodiment 1.Test-results is listed following table in.
Embodiment 6
Wear resistant alloy composition (weight %) is:
C 2.90，
Si 2.00，
Mn 2.00，
Cr 19.00，
Ti 0.20，
Zr 0.48
Nb 0.05
The Fe surplus.
Make the cutting edge of scrap yard clinker pusher with this alloy.Test by the method described in the similar embodiment 1.Test-results is listed following table in.
Embodiment 7
Wear resistant alloy composition (weight %) is:
C 3.10，
Si 1.25，
Mn 1.50，
Cr 20.00，
Ti 0.11，
Zr 0.20，
Nb 0.08，
The Fe surplus.
Make the parts of spiral propeller of the brick pressing machine of brick making industry with this alloy.Test by the method described in the similar embodiment 1.Test-results is listed following table in.
Embodiment 8
Wear resistant alloy composition (weight %) is:
C 2.80，
Si 0.01，
Mn 0.20，
Cr 18.50，
Ti 0.03，
Zr 0.30，
Nb 0.05，
The Fe surplus.
Make the outlet lining of boring tool flushing pipe with this alloy.Test by the method described in the similar embodiment 1.Test-results is listed following table in.
Embodiment 9
Wear resistant alloy composition (weight %) is:
C 2.80，
Si 1.90，
Mn 5.50，
Cr 25.00，
Ti 0.10，
Zr 0.25，
Nb 0.10，
The Fe surplus.
Be manufactured on the bow-shaped part of the defibrator that is used to grind the timber slurry in the paper with this alloy.Test by the method described in the similar embodiment 1.Test-results is listed following table in.
Embodiment 10
Wear resistant alloy composition (weight) is:
C 2.50，
Si 1.90，
Mn 1.90，
Cr 28.00，
Ti 0.08，
Zr 0.40，
Nb 0.16，
The Fe surplus.
Make the wood working cutter with this alloy.Test by the method described in the similar enforcement 1.Test-results is listed following table in.
Embodiment 11
Wear resistant alloy composition (weight %) is:
C 2.40，
Si 0.80，
Mn 0.40，
Cr 26.00
Ti 0.10，
Zr 0.02，
Nb 0.05，
The Fe surplus.
Make feed processing with this alloy and pulverize the machine knife sword.Test by the method described in the similar embodiment 1.Test-results is listed following table in.
Table
1. the bending strength limit
MPa 110 114 112 99 114 99
2. hardness HRe 61 66 65 64 65 65
(by RHC)
3. represent plastic 6.0 6.0 6.1 6.0 6.0 6.1
Amount of deflection is (with 2.0 * 10
-1m
And cross section (10 * 10) * 10
-6m
Specimen test be benchmark)
Continuous table
Embodiment
Number 1234567
4. abrasive wear relatively
(as stated above 0.35 0.34 0.34 0.36 0.35 0.36
Measure)
Work life be with
Known alloy does 45 1.5 263
Be 1 to compare
Continuous table
Embodiment recommends composition
Existing composition
Numbering is pressed embodiment
1 7 8 9 10 11
1 8 9 10 11 12 13
1 110 110 112 110 110 900
2 64 62 61 66 61 54
3 6.0 6.0 6.1 6.1 6.1 2.5
4 0.38 0.36 0.36 0.34 0.36 0.68
5 4 3 2 4 3 1
Claims (1)
1, a kind of wear resistant alloy that contains carbon, silicon, manganese, chromium, titanium, zirconium, niobium and iron is characterized in that, its chemical ingredients (weight %) is:
C 2.38-3.50，
Si?0.01-2.50，
Mn?0.20-5.50，
Cr?18.50-40.00，
Ti?0.03-0.20，
Zr?0.02-0.48，
Nb?0.05-0.16
The Fe surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102590 CN1015183B (en) | 1988-04-11 | 1988-04-11 | Wear resistant alloy |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88102590 CN1015183B (en) | 1988-04-11 | 1988-04-11 | Wear resistant alloy |
| DE19883812459 DE3812459A1 (en) | 1988-04-14 | 1988-04-14 | Wear-resistant alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1036993A CN1036993A (en) | 1989-11-08 |
| CN1015183B true CN1015183B (en) | 1991-12-25 |
Family
ID=25742446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88102590 Expired CN1015183B (en) | 1988-04-11 | 1988-04-11 | Wear resistant alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015183B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265547B (en) * | 2008-04-25 | 2010-06-02 | 北京工业大学 | High-chromium-manganese cast iron roller and preparation method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305772B (en) * | 2013-05-18 | 2016-05-25 | 宁波华电铸钢有限公司 | A kind of high rigidity slag stock pump pump housing and preparation method thereof |
| CN105513666A (en) * | 2016-01-10 | 2016-04-20 | 陈松 | Shielding cable |
| CN105655000A (en) * | 2016-01-15 | 2016-06-08 | 熊小辉 | Double-core electric power wire |
-
1988
- 1988-04-11 CN CN 88102590 patent/CN1015183B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265547B (en) * | 2008-04-25 | 2010-06-02 | 北京工业大学 | High-chromium-manganese cast iron roller and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1036993A (en) | 1989-11-08 |
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