CN102534397B - steel projection material - Google Patents
steel projection material Download PDFInfo
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- CN102534397B CN102534397B CN201110219373.4A CN201110219373A CN102534397B CN 102534397 B CN102534397 B CN 102534397B CN 201110219373 A CN201110219373 A CN 201110219373A CN 102534397 B CN102534397 B CN 102534397B
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Abstract
A kind of steel projection material.The present invention provides a kind of bead projection material.Widely using the bead projection material with following chemical composition always, i.e. in terms of quality %, containing C in the past：0.6～1.4%, Si：0.3～1.6%, Mn：0.3～1.3%, P：Less than 0.05%, S：Less than 0.05%, remainder is formed by Fe and inevitable impurity.But the deviations such as the metal structure due to various projection materials, hardness are big, so there is consumption such problem soon that inequality or projection material are occurred on the completion in shot-peening face.The bead projection material of the present invention is characterised by thering is following chemical composition：In terms of quality %, containing C：0.7～1.2%, Si：0.4～1.5%, Mn：0.35～1.2%, P：Less than 0.05%, S：Less than 0.05%, remainder is formed by Fe and inevitable impurity.
Description
Technical field
The present invention relates to a kind of steel that deviation is little and blast cleaning ability is stable of quality (hardness, density, metal structure)
Ferrum system projects material.
Background technology
Generally, the cast steel widely using the C containing about 1% in terms of quality % to manufacture steel projection material, and it is from casting
The knockout of part starts, and is mainly used in the wide areas such as the deflashing of Ferrious material blank, the removing of attachment, the removing of oxide-film and uses
On the way.
As the projection material for these purposes although having cutting steel wire obtained from cut-out hard steel wire rod, passing through to cut
Disconnected rustless steel steel wire and the rustless steel cutting steel wire that manufactures and using water etc., cast stainless steel is sprayed and manufactured not
Rust shot etc., but shot is can be popularized the most with the projection material of more inexpensive manufacture.
But, for example, cutting steel wire when, such for wire rod uniform blank carried out cut-out to be carried out by then passing through
Manufacture, so the little such feature of deviation with composition, hardness, metal structure etc., and when being shot, by then passing through water
Deng cooling medium the melt of the high temperature of fusing is ground into what particle was manufactured, so cold in each particle (shot)
But deviation can be produced during, and in quenching, the such heat treatment step of tempering, same offset issue also occurs.Cause
This, compared with cutting steel wire, inequality or consumption such problem soon of shot in the completion that there is bead face.
Content of the invention
Using the bead projection material with following chemical composition always, i.e. in terms of quality %, contain in the past
C：0.6～1.4%, Si：0.3～1.6%, Mn：0.3～1.3%, P：Less than 0.05%, S：Less than 0.05%, remainder by
Fe and inevitable impurity are formed.Even if there is the composition tolerances of so wide area, the also oxidation to the knockout of foundry goods, steel plate
This processing intent of removing of thing realizes there is sufficient effect, but the deviation such as the metal structure due to each shot, hardness is big, institute
There is consumption such problem soon that inequality or projection material are occurred on the completion in shot-peening face.
It is an object of the invention to by suitably being changed to the chemical composition including micro constitutent (impurity) content, thus
A kind of projection material that deviation is little and blast cleaning ability is stable of quality (hardness, density, metal structure) is provided.
The present invention is carried out for reaching above-mentioned purpose.
The bead projection material of the present invention the 1st mode is it is characterised in that have following chemical composition：With matter
Amount % meter, containing C：0.7～1.2%, Si：0.4～1.5%, Mn：0.35～1.2%, P：Less than 0.05%, S：0.05% with
Under, remainder is formed by Fe and inevitable impurity.
In addition, the bead of the present invention the 1st mode projection material, in terms of quality %, preferably contain Al：0.04～
0.12%.Further preferably contain Cr in terms of quality %：0.1～1.2%.And in terms of quality %, preferably contain B：0.001～
0.05%.
And then, the bead projection material of the present invention the 2nd mode, can contain C in terms of quality %：0.85～～
1.15%th, Si：0.6～1.0%, Mn：0.6～1.0%, P：Less than 0.03%, S：Less than 0.03%.
And, the bead of the present invention the 2nd mode projection material, preferably contains Al in terms of quality %：0.04～
0.12%.Further preferably contain Cr in terms of quality %：0.1～1.2%.And in terms of quality %, preferably contain B：0.001～
0.05%.
Additionally, it is also preferred that in terms of quality %, containing Mo and W adding up to 0.1～0.5%, or in terms of quality %, containing total
It is calculated as 0.05～0.5% V, Nb and Ti.
The present invention is that have the bead projection material of following chemical composition as seen from the above description：With quality %
Meter, containing C：0.7～1.2%, Si：0.4～1.5%, Mn：0.35～1.2%, P：Less than 0.05%, S：Less than 0.05%, remain
Remaining part is divided and is formed by Fe and inevitable impurity, can decline quality deviation by reducing the compositing range of each element further.
In addition, by containing Al in terms of quality %：0.04～～0.12%, shape can be improved and reduce internal flaw
(emptying aperture).Also by containing Cr in terms of quality %：0.1～1.2%, hardenability can be improved.In addition, by being contained in terms of quality %
There is B：0.001～～0.05%, hardenability can be improved further.
Furthermore, by containing C in terms of quality %：0.85～～1.15%, Si：0.6～1.0%, Mn：0.6～1.0%,
P：Less than 0.03%, S：Less than 0.03%, the decline of mechanical strength can be prevented.
In addition, by containing Al in terms of quality %：0.04～0.12%, shape can be improved and reduce internal flaw (sky
Hole).And by containing Cr in terms of quality %：0.1～1.2%, hardenability can be improved.In addition, by being contained in terms of quality %
There is B：0.001～0.05%, hardenability can be improved further
And then, by containing, in terms of quality %, Mo and W adding up to 0.1～0.5%, it is improved hardenability, improve tempering
The effect of hardness.If being less than 0.1%, there is no effect, if more than 0.5%, not having cost advantage, toughness to decline yet.
In addition, by containing, in terms of quality %, V, Nb and the Ti adding up to 0.05～0.5%, having crystalline particle miniaturization
And improve the effect of toughness.If being less than 0.05%, there is no effect, if more than 0.5%, due to the increase of carbide, under toughness
Fall.
Specific embodiment
Hereinafter, the test example (embodiment comparative example) carrying out to confirm the effect of the present invention is illustrated.
<Test example 1>
In this test example, in order to investigate the impact of C, Si, Mn, P, S, Al, Cr, B, by steel scrap, Fe-Si, Fe-Mn, Fe-
Cr, Fe-B, fine aluminium, carburized material etc., as raw material, adjust proportioning raw materials to reach desired composition, and molten using ferrum conversion
The test of change amount 100kg is melted with high frequency melting furnace.Fusion temperature is set to 1640 DEG C～1680 DEG C, by water atomization
To make shot.The shot obtaining is dried and is heated to 850 DEG C keep 1 hour, carry out water quenching afterwards, then carry out back
Fire makes the hardness of shot reach Hv440～460.Sieved implementing the shot after heat treatment, taken out a diameter of 1mm
The granule of (by the sieve of 1.18mm, residuing in the sieve of 1.00mm) size, have rated quality etc..The results are shown in table 1.
The method being specified according to Japanese Industrial Standards " bead metal system removing material " (JIS-Z0311-2004)
Void content, nonspherical particle rate, hardness are determined.
With regard to void content, it is to have obtained shot particle is embedded in resin to be ground, using magnifier, particle is cut
When face is observed, the ratio of the shot particle that emptying aperture occupied area is more than 10% with respect to the area of section of shot.Carry out
The shot population observed is 100.
With regard to nonspherical particle rate, it is to have obtained to spread shot particle out to be observed with magnifier on glass plate
When, the major diameter of shot particle is the ratio of more than 2 times of particle of minor axis.The shot population observed is 100.
With regard to hardness, it is shot particle to be embedded in resin be ground, determines the Vickers hardness in particle section.Examination
Testing load-carrying is 9.8N, and load-carrying load time is 12 seconds, has tried to achieve the meansigma methodss of 20 effective measured values.
For the life-span of shot, carry out by SAE (Society of Automotive Engineers, Inc.) J-445-
The shock of 200507 defineds pulverizes test.That is, the shot 100g of above-mentioned a diameter of 1mm is put in assay device, with
The speed of 60m/s makes itself and abrasion performance cast target made of iron and shock is repeated, and often carries out regulation collision frequency and just sieves removal
Chippy shot, measures the weight of residual shot simultaneously, makes the weight of the shot of residual become less than the 30% of initial weight
Till tested.Represent that collision frequency and the curve of the proportionate relationship of residual shot weight are amassed by obtained by this test
Point, using the numerical value thus tried to achieve as life value.Life-span shown in table 1 than the life value being embodiment 3 to usually constitute is
, come to represent, the value of life-span ratio is more big more represents excellent durability for ratio when 100.
For chemical composition, it is that the shot itself to trial-production is analyzed using ICP Atomic Emission Spectrophotometer method.
Embodiment 1～3 be chemical composition for the present invention the 1st mode be adjusted so that P, S become 0.04～
0.05%, and then especially the impact to C, Si, Mn is investigated.Embodiment 1 is C, Si, Mn composition close to lower limit, implements
Example 2 is C, Si, Mn composition close to the upper limit, and embodiment 3 is composition most commonly.The void content of the sample of embodiment 1～3, non-
Spheroidal particle rate, life-span are more little than equal difference.
On the other hand, in the comparative example 1 of composition lower limit that C, Si, Mn are less than the present invention the 1st mode, void content and aspheric
Shape particle rate increases but life-span ratio declines to a great extent.This is because C, Si, Mn are low, thus fusing when deoxidation effect insufficient thus
Increase the defects such as emptying aperture and lead to.In addition, exceed the comparison 2 of the composition upper limit of the present invention the 1st mode in C, Si, Mn in, the longevity
Life ratio especially declines to a great extent.This is because C amount is many, so easily forming carbide (Fe during water atomization3C), when having quenched
Heating do not decompose so that as carbide residual particle and lead to.
Embodiment 4 has investigated the impact of Al, when result is the Al in the range of in terms of quality % containing 0.04～0.12%,
Void content and nonspherical particle rate can be remarkably decreased, and life-span ratio also increases.This is considered as because the deoxidation effect of Al is led
Cause.
On the other hand, although void content in Al is in terms of quality % more than the comparative example 3 of 0.04～0.12% range limit
Low, but nonspherical particle rate increases, and life-span ratio also declines.This is considered as because in the case of Al surplus, in bath surface shape
The oxide becoming can increase thus suppressing surface tension, makes the result that shape is deteriorated.
Embodiment 5 has investigated the impact of Cr, and result is the Al in the range of in terms of quality % containing 0.04～0.12%, and
In terms of quality % containing the Cr in the range of 0.1～1.2% in the case of, void content and nonspherical particle rate are remarkably decreased, the life-span
Increase than also, obtained excellent result.
On the other hand, Cr in terms of quality % more than in the comparative example 4 of 0.1～1.2% range limit, with embodiment 5 phase
Increase than nonspherical particle rate, life-span ratio declines.It is presumed to when Cr is superfluous, and the situation such as Al is formed in bath surface
Oxide can increase so that shape be deteriorated, become easily to form the carbide of Cr simultaneously so that toughness decline.
Embodiment 6 has investigated the impact of B, and result is the Al in the range of in terms of quality % containing 0.04～0.12%, and
Containing the Cr in the range of 0.1～1.2% in terms of quality %, the feelings containing the B in the range of 0.001～0.05% also in terms of quality %
Under condition, void content and nonspherical particle rate are changed into lower, and life-span ratio is higher, have obtained more excellent result.
On the other hand although B in terms of quality % more than in the comparative example 5 of 0.001～0.05% range limit, also obtain
The result close with embodiment 6, but sufficient effect can be obtained in 0.001～0.05% scope, it is contemplated that cost, excellent
Choosing is set to 0.001～0.05%.
Table 1
<Test example 2>
The impact of C, Si, Mn, P, S and Mo, W, V, Nb, Ti has been investigated in this test example.
The manufacture method of sample, evaluation methodology are such as test example 1.Result is shown in table 2.
It is noted that, due to having determined that the shadow to void content and nonspherical particle rate for each element in test example 1
Ring, so only illustrating the result of life-span ratio in this test example.
Embodiment 7～8 is that the chemical composition for the present invention the 2nd mode is adjusted, so that P, S become less than 0.03%
On the basis of, investigate the impact of C, Si, Mn.Embodiment 7 is C, Si, Mn composition close to lower limit, and embodiment 8 is C, Si, Mn
Composition close to the upper limit.The life-span ratio of the sample of embodiment 7～8, all more than 100, can confirm that minimizing to steel harmful element P, S
And C, Si, Mn are set to the effect of further preferred range.
Embodiment 9 has investigated the impact of the Al in the chemical composition of the present invention the 2nd mode, and result is the enforcement with table 1
Example 4 is compared, and the life-span is than raising.This is presumably by turning down the impact that P, S are led to.
On the other hand, Al in terms of quality % more than in the comparative example 6 of 0.04～0.12% scope, such as the comparison of table 1
The situation of example 3, the life-span is than decline.
Embodiment 10 has investigated the impact of Cr, and the Al in the range of in terms of quality % containing 0.04～0.12%, also with matter
In the case that amount % counts containing the Cr in the range of 0.1～1.2%, life-span ratio increases, and has obtained excellent result.
On the other hand, Cr in terms of quality % more than in the comparative example 7 of 0.1～1.2% range limit, with embodiment 10 phase
Decline than life-span ratio.It is presumed to Cr superfluous when, can increase such as oxide that the situation of Al is formed in bath surface thus
So that shape is deteriorated, and easily form the carbide of Cr so that toughness declines.
Embodiment 11 has investigated the impact of B, the Al in the range of in terms of quality % containing 0.04～0.12%, and with matter
Amount % meter containing the Cr in the range of 0.1～1.2%, the situation containing the B in the range of 0.001～0.05% also in terms of quality %
Under, the life-span, than improving, has obtained more excellent result.
On the other hand although B in terms of quality % more than in the comparative example 8 of 0.001～0.05% range limit, also obtain
The result close with embodiment 11, but sufficient effect can be obtained in the range of 0.001～0.05%, it is contemplated that becoming
This, be preferably set to 0.001～0.05%.
Embodiment 12 has investigated the impact of Mo, W, the Al in the range of in terms of quality % containing 0.04～0.12%, and with
Quality % meter containing the Cr in the range of 0.1～1.2%, the situation containing the B in the range of 0.001～0.05% also in terms of quality %
Under, during containing Mo and W adding up in the range of 0.1～0.5% quality %, obtain than embodiment 11 life-span than further
The more excellent result improving.
On the other hand although the comparative example 9 totalling in the range of 0.1～0.5% in Mo and W in terms of quality %
In, the life-span is the degree how much having declined than also compared with embodiment 12, but in terms of quality % 0.1～0.5% scope
Interior energy accesses sufficient effect, it is contemplated that cost, is preferably set to 0.1～0.5%.
Embodiment 13 has investigated the impact of V, Nb, Ti, the Al in the range of containing in terms of quality % 0.04～0.12%, and
Containing the Cr in the range of 0.1～1.2% in terms of quality %, the feelings containing the B in the range of 0.001～0.05% also in terms of quality %
Under condition, when amounting to V, Nb, the Ti in the range of quality % containing 0.05～0.5%, obtain more high life ratio, obtained more
Excellent result.It is speculated as, by V, Nb, Ti containing Sq, making metal structure miniaturization, improve toughness.
On the other hand, V, Nb, Ti in terms of quality % total amount more than 0.05～0.5% range limit comparative example 10
In, ratio declines to a great extent the life-span compared with embodiment 13.When it is presumed to V, Nb, Ti surplus, these elements form thick carbon
Compound, makes the life-span than decline.
Table 2
Claims (1)
1. a kind of bead projection material is it is characterised in that be, by cooling medium, the melt of fusing is ground into particle
Come manufactured, it has following chemical composition：In terms of quality %, containing C：0.96～1.0%, Si：0.82～0.88%,
Mn：0.92～0.99%, Al：0.08～0.11%, Cr：0.22～0.68%, P：0.02～0.04%, S：0.02～
0.04%th, B：0.003～0.04%, add up to 0.1～0.5% Mo and W, remainder is by Fe and inevitable impurity
Formed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010286792A JP5777201B2 (en) | 2010-12-23 | 2010-12-23 | Steel projection material |
| JP2010-286792 | 2010-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102534397A CN102534397A (en) | 2012-07-04 |
| CN102534397B true CN102534397B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110219373.4A Active CN102534397B (en) | 2010-12-23 | 2011-07-28 | steel projection material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5777201B2 (en) |
| CN (1) | CN102534397B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014563B (en) * | 2012-12-27 | 2014-11-19 | 杨继会 | Multi-element micro-alloy strengthening steel shot/sand and preparation process thereof |
| JP2017512142A (en) * | 2014-02-14 | 2017-05-18 | ザ・ナノスティール・カンパニー・インコーポレーテッド | Shot material and shot peening method |
| CN108367413B (en) * | 2016-01-26 | 2021-07-23 | 新东工业株式会社 | Cast steel projection material |
| JPWO2020174676A1 (en) * | 2019-02-28 | 2021-11-04 | 新東工業株式会社 | Shot manufacturing method, shot |
| CN112708853B (en) * | 2020-12-22 | 2023-01-31 | 安徽工业大学 | Machining method for improving performance of AlCrN coating cutter through microparticle shot blasting post-treatment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1827823A (en) * | 2006-04-13 | 2006-09-06 | 李宁 | High-carbon alloy steel wearable steel ball and production method thereof |
| CN101492793A (en) * | 2009-02-21 | 2009-07-29 | 丁起 | Medium-lower alloy abrasion resistant steel |
| CN101899624A (en) * | 2010-08-06 | 2010-12-01 | 常熟市龙特耐磨球有限公司 | High-carbon low-alloy large size wearable forged mining steel ball and manufacture method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02228448A (en) * | 1989-02-28 | 1990-09-11 | Daido Steel Co Ltd | High strength and high toughness steel shot |
| JPH03253544A (en) * | 1990-03-01 | 1991-11-12 | Daido Steel Co Ltd | High-hardness wire steel product for shot grain |
| JP2926397B2 (en) * | 1997-06-11 | 1999-07-28 | 明久 井上 | Impact-resistant iron-based alloy spherical particles |
| JP2004148414A (en) * | 2002-10-28 | 2004-05-27 | Seiko Epson Corp | Abrasive and production method for abrasive and production device used for the same |
-
2010
- 2010-12-23 JP JP2010286792A patent/JP5777201B2/en active Active
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- 2011-07-28 CN CN201110219373.4A patent/CN102534397B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1827823A (en) * | 2006-04-13 | 2006-09-06 | 李宁 | High-carbon alloy steel wearable steel ball and production method thereof |
| CN101492793A (en) * | 2009-02-21 | 2009-07-29 | 丁起 | Medium-lower alloy abrasion resistant steel |
| CN101899624A (en) * | 2010-08-06 | 2010-12-01 | 常熟市龙特耐磨球有限公司 | High-carbon low-alloy large size wearable forged mining steel ball and manufacture method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012131002A (en) | 2012-07-12 |
| CN102534397A (en) | 2012-07-04 |
| JP5777201B2 (en) | 2015-09-09 |
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