CN104313477B - A kind of high abrasion steel and its application - Google Patents
A kind of high abrasion steel and its application Download PDFInfo
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- CN104313477B CN104313477B CN201410529438.9A CN201410529438A CN104313477B CN 104313477 B CN104313477 B CN 104313477B CN 201410529438 A CN201410529438 A CN 201410529438A CN 104313477 B CN104313477 B CN 104313477B
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Abstract
The invention discloses a kind of high abrasion steel and its application, it is therefore intended that solves to make hobboing cutter cutter ring using H13 at present, the cutter ring service life is relatively short, tunneling 23 meters will change, excavating cost is caused to increase, excavation progress delays, the problem of having a strong impact on project progress.The high abrasion steel of the present invention include the component of following percentage by weight：C：0.95~1.30；Si：0.95~1.60；Mn：0.20~0.55；P：≤0.030；S：≤0.030；Cr：6.50~9.00；Mo：1.10~1.80；V：1.50~3.50；Remaining is iron and inevitable impurity.The present invention provides a kind of new steel, the characteristics of it has high-wearing feature.The characteristics of there is high-wearing feature using the apparatus manufactured by steel of the present invention, with higher application value.The characteristics of having high-wearing feature using the cutter ring made by steel of the present invention, long for extension cutter ring service life, rice number is excavated in increase, it is ensured that progress is excavated, with important economic value and social value.
Description
Technical field
The present invention relates to iron and steel domain, especially a kind of high abrasion steel and its application.
Background technology
With the continuous quickening of countries in the world (especially developed country) urbanization process, the underground installation such as subway is largely thrown
Enter to use, the prospect of underground space development is boundless.Underground space engineering construction gradually increases, and shield excavation machine is on ground
It is widely used in a variety of applications in the engineering such as lower railway traffic and tunnel.Under the background that non-digging technology is developed rapidly, phase therewith
Adjoint, the demand to shield machine is increasingly increased both at home and abroad.
At present, the research and development metro shield equipment that China can be autonomous, domestic shield machine and accessory also gradually replace into
Mouth product, starts occuping market leading position.With the continuous heating of domestic Underground Rail Transit project, for shield cutter
Demand is also continuously increased, and hobboing cutter therein is the main expendable part on shield machine, and consumption is quite big.The cutter ring of hobboing cutter according to
The difference of rock-soil layer soil property, chooses different materials, and the selection of material determines the service life of cutter ring.
At present, the material selected by hobboing cutter cutter ring is largely H13, and H13 (4Cr5MoSiV1) composition is following (wt%)：
0.32~0.45wt% C, 0.80~1.20wt% Si, 0.20~0.50wt% Mn ,≤0.030wt% P ,≤
0.030wt% S, 4.75~5.50wt% Cr, 1.10~1.75wt% Mo, 0.80~1.20wt% V, surplus is iron
With inevitable impurity.
Then, the service life using the H13 hobboing cutter cutter rings made is relatively short, and 2-3 meters of driving will be changed.Frequently more
Hobboing cutter cutter ring is changed, causes excavating cost to increase, excavation progress delays, and has a strong impact on project progress.
Therefore, at present in the urgent need to a kind of new material for hobboing cutter cutter ring, to extend the service life of cutter ring.
The content of the invention
The goal of the invention of the present invention is：For making hobboing cutter cutter ring using H13 at present, the cutter ring service life is relatively
Short, 2-3 meters of driving will be changed, and cause excavating cost to increase, excavation progress delays, the problem of having a strong impact on project progress carries
For a kind of high abrasion steel and its application.The present invention provides a kind of new steel, the characteristics of it has high-wearing feature.Using this hair
The characteristics of apparatus manufactured by bright steel has high-wearing feature, with higher application value.Using made by steel of the present invention
Cutter ring the characteristics of there is high-wearing feature, long for extension cutter ring service life, rice number is excavated in increase, it is ensured that excavate progress, tool
There is important economic value and social value.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of high abrasion steel, include the component of following percentage by weight：
C：0.95~1.30；
Si：0.95~1.60；
Mn：0.20~0.55；
P：≤0.030；
S：≤0.030；
Cr：6.50~9.00；
Mo：1.10~1.80；
V：1.50~3.50；
Remaining is iron and inevitable impurity.
Further, the component of following percentage by weight is included：
C：1.00~1.20；
Si：1.10~1.55；
Mn：0.30~0.45；
P：≤0.030；
S：≤0.030；
Cr：7.00~8.00；
Mo：1.20~1.60；
V：1.80~3.00；
Remaining is iron and inevitable impurity.
Further, the component of following percentage by weight is included：
C：1.10；
Si：1.20；
Mn：0.40；
P：≤0.030；
S：≤0.030；
Cr：7.50；
Mo：1.30；
V：2.20；
Remaining is iron and inevitable impurity.
The application of foregoing high abrasion steel, the steel is used for the manufacture of wear-resisting apparatus.
The application of foregoing high abrasion steel, the steel is used for the manufacture of hobboing cutter cutter ring.
For foregoing problems, the present invention provides a kind of high abrasion steel and its application.Applicant orders the high abrasion steel
Entitled DK48.By actual verification, the wearability of high abrasion steel of the invention is greatly improved compared with H13, can dramatically increase knife
The service life of circle, improves and excavates rice number.
By embodiments of the invention as can be seen that being improved using the DK48 of present invention wearability by the 4 of H13 to 8, dig
Pick rice number rises to more than 5 meters by H13 2-3 rice, and excavation most long rice number reaches 12.52 meters in embodiment, and tap length is obtained
To being greatly improved.The increase of cutter ring service life, and excavate the extension of rice number, it is meant that the reduction of replacement frequency, and dig
The reduction of cost is dug, for shortening construction period, it is ensured that project progress, is had great importance.
With the swift and violent growth of underground space engineering construction, the meeting of shield machine and related accessory is in the trend of explosive growth,
And the cutter ring consumption of hobboing cutter can also steeply rise, and the hobboing cutter cutter ring that makes of the present invention has that anti-wear performance is strong, service life is long
The characteristics of, it is for reduction excavating cost, it is ensured that the progress of underground space engineering construction, with remarkable progress.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification, unless specifically stated otherwise, can be equivalent by other or with similar purpose
Alternative features are replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics
.
Table 1 is the chemical composition contrast table of the invention with existing steel H13.
The high abrasion steel (i.e. DK48) of the present invention of table 1 are contrasted with existing steel H13 chemical composition
Table 2 is wearability of the steel (trade mark is DK48 in table) with existing steel H13 of the present invention, Toughness comparison's table.Its
In, 10 points are wearability, the highest standard of toughness, HRC：56-58 refers to that Rockwell hardness is 56-58, HRC：60-62 refers to Rockwell
Hardness is 60-62.
The wearability of table 2 and Toughness comparison's table
| The trade mark | Wearability | Toughness |
| H13 | 4(HRC：56-58) | 8 |
| DK48 | 8(HRC：60-62) | 6 |
Table 3 is embodiment of the invention.
Using the hobboing cutter made by the material of conventional H 13 as reference, same size is fabricated to using the steel in the embodiment of table 3
Hobboing cutter.In the actual excavation that the hobboing cutter of preparation is used for certain subway, each example is determined three times, averaged, corresponding to survey
Determine result as shown in table 4.
Table 4 excavates rice number and determined
| Embodiment | Excavate rice number |
| 1 | 5.23 |
| 2 | 10.77 |
| 3 | 7.84 |
| 4 | 9.5 |
| 5 | 12.52 |
| 6 | 6.9 |
| H13 | 2.86 |
The hobboing cutter made using existing H13 materials is given in table 4, with using made by 1-6 materials of the embodiment of the present invention
Hobboing cutter excavation rice number measurement result.It can be seen from Table 4 that, the hobboing cutter made using existing H13 materials, it excavates rice number
Only 2.86 meters.And using the hobboing cutter that makes of the present invention, it excavates rice number and reaches more than 5.23 meters, up to 12.52 meters, relatively
In current material, excavate rice number and be greatly improved.This also indicates that, anti-wear performance of the invention, excavates rice number compared with prior art
Have and be obviously improved, it extends hobboing cutter service life for reduction hobboing cutter replacement frequency, and rice number is excavated in extension, it is ensured that engineering is entered
Exhibition, it is significant.
The invention is not limited in foregoing embodiment.The present invention, which is expanded to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (1)
1. application of a kind of high abrasion steel in hobboing cutter cutter ring is prepared, it is characterised in that include the group of following percentage by weight
Point：
C：1.00~1.30；
Si：0.95~1.60；
Mn：0.20~0.55；
P：≤0.030；
S：≤0.030；
Cr：6.50~9.00；
Mo：1.10~1.80；
V：3.31~3.50；
Remaining is iron and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410529438.9A CN104313477B (en) | 2014-10-10 | 2014-10-10 | A kind of high abrasion steel and its application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410529438.9A CN104313477B (en) | 2014-10-10 | 2014-10-10 | A kind of high abrasion steel and its application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104313477A CN104313477A (en) | 2015-01-28 |
| CN104313477B true CN104313477B (en) | 2017-10-13 |
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| CN107326265A (en) * | 2017-07-06 | 2017-11-07 | 浙江百达精工股份有限公司 | The tempering method for treating of rotating air conditioner compressor slide plate and slide plate |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381599C (en) * | 2005-06-22 | 2008-04-16 | 贵州大学 | Low cost high-speed steel |
| CN1876880A (en) * | 2006-06-30 | 2006-12-13 | 贵州三占集团实业有限公司 | Cold-work die steel for high speed stamping |
| CN101386027A (en) * | 2007-09-14 | 2009-03-18 | 日立金属株式会社 | Centrifugal casting roller |
| AU2011361937B2 (en) * | 2011-03-04 | 2015-10-01 | Akers Ab | A forged roll meeting the requirements of the cold rolling industry and a method for production of such a roll |
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