CN103789700A - Steel for steel shots of shot blasting machine - Google Patents
Steel for steel shots of shot blasting machine Download PDFInfo
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- CN103789700A CN103789700A CN201210435826.1A CN201210435826A CN103789700A CN 103789700 A CN103789700 A CN 103789700A CN 201210435826 A CN201210435826 A CN 201210435826A CN 103789700 A CN103789700 A CN 103789700A
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Abstract
The invention discloses steel for steel shots of a shot blasting machine. The steel comprises the following chemical components in percentage by weight: 0.65%-0.75% of C, 0.05%-0.15% of Si, 1.5%-1.7% of Mn, less than or equal to 0.020% of P, less than or equal to 0.020% of S, 0.6-0.8% of Cr, 0.3-0.5% of Ni, V: 0.06-0.08% of V, 0.02-0.04% of Al, 0.3-0.5% of Cu, and the balance of Fe and inevitable impurities.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, relate in particular to a kind of shot-blasting machine shot steel.
Background technology
Cast steel ball is widely used in removing surface, rust cleaning, coating removal and the strengthening of machinery, shipbuilding, automobile, aircraft and container manufacture component at present.Along with the enhancing of space flight, aviation and special dimension day by day improving that structural part surface quality is required and people's environmental protection consciousness, the research and development of extraordinary shot are the focuses of Recent study.Originally, with a large amount of steel parts of cleanup acid treatment, major part changes the discharge that replaces reducing spent acid and sewage etc. with throwing shot blasting at present, and the consumption of throwing shot blasting cast steel ball is further increased.At present, the cast steel ball product using both at home and abroad mainly contains low-carbon (LC) and the large class of high-carbon two.High carbon cast steel ball is because of carbon content high (0.8-1.2wt.%C), through centrifugal or be atomized into ball after cool to room temperature form high-carbon plate martensite tissue, and produce a large amount of crackles, though through heating quenching and temper again, crackle still can exist, thereby fragility is large, not shock-resistant, easily broken in shotblasting, sandblast cleaning and shot peening strengthening process, losing quantity is large.Low-carbon cast steel ball carbon content low (being less than 0.2wt.%C), toughness is high, but hardness is low, not wear-resisting, and because fusing point is high, Molten Steel Flow is poor, shrink large, cause that shot is loose and hollow defect is many, although the ERVIN cycle life of measuring by 100% method of substitution is higher than high-carbon shot, in the time that steel part is cleared up because low-carbon cast steel ball hardness is low, cleaning efficiency is low, clearance time is long, and the low carbon steel ball that the steel part reality of cleaning same amount consumes does not reduce, and sometimes can increase on the contrary.Easily shot broken and wearing and tearing also can produce dust in continuing to throw the process of beating, and the surface clearness of cleaned steel part is reduced.In the time carrying out shot peening raising fatigue strength, broken high-carbon shot also can scratch the surface of workpiece and fatigue strength is reduced.Chinese patent 200910016072.4 discloses carbon cast steel ball in one, and its raw material consists of carbon 0.35-0.65%, silicon 0-0.3%, and manganese 0.35-1.5%, phosphorus 0-0.05%, sulphur 0-0.05%, all the other are iron.Accordingly, in its preparation method, in work in-process as cast condition, carbon cast steel ball Heating temperature is 820-860 ℃, and after cold quenching, tempering temperature is 150-550 ℃.Experiment finds, by this technique when comparatively high temps tempering, the middle carbon cast steel ball hardness of preparation is lower; In the time adopting lesser temps tempering, hardness is high but toughness is obviously not enough, and service life cycle is short.
Summary of the invention
The object of the invention is to propose a kind of shot-blasting machine shot steel, this steel had both had high rigidity, had again suitable toughness, and it is broken in use that the shot of preparing with it can be avoided.
For reaching this object, the present invention by the following technical solutions:
A kind of shot-blasting machine shot steel, the chemical composition of described steel is made up of following component by weight percentage: C:0.65-0.75, Si:0.05-0.15, Mn:1.5-1.7, P :≤0.020, S :≤0.020, Cr:0.6-0.8, Ni:0.3-0.5, V:0.06-0.08, Al:0.02-0.04, Cu:0.3-0.5, surplus is Fe and inevitable impurity.
Preferably, the chemical composition of described steel is made up of following component by weight percentage: C:0.68-0.72, Si:0.08-0.12, Mn:1.55-1.65, P :≤0.020, S :≤0.020, Cr:0.65-0.75, Ni:0.35-0.45, V:0.065-0.075, Al:0.025-0.035, Cu:0.35-0.45, surplus is Fe and inevitable impurity.
Most preferably, the chemical composition of described steel is made up of following component by weight percentage: C:0.70, Si:0.10, Mn:1.60, P :≤0.020, S :≤0.020, Cr:0.70, Ni:0.40, V:0.070, Al:0.030, Cu:0.40, surplus is Fe and inevitable impurity.
Shot of the present invention suitably reduces carbon content, and coordinate suitable alloying element, and wherein chromium, manganese, vanadium are main hardening element and the element that improves hardening capacity, aluminium is crystal grain thinning element, the content of harmful element sulphur, phosphorus is all limited in lower level, adds appropriate nickel to improve obdurability.Shot carbon content of the present invention both can guarantee that shot had high hardness, can avoid again cracking in centrifugal forming and heating quenching process, thereby increase toughness.The simultaneously chromium in cast steel ball, makes carbide in shot by Fe
3c type cementite becomes (Fe, Cr)
3c type alloyed cementite, the hardness of this alloyed cementite is high, thereby wear resistance is good.In addition, alloying elements cr add the anti-temper resistance that has improved shot.
The present invention has following beneficial effect:
Shot of the present invention has high strength, high rigidity, high-wearing feature, impact-resistant characteristic.The hardness of abrasion-proof steel ball of the present invention is high, and its surface hardness can reach HRC63-65, and even, the inside and outside difference of hardness of Hardness Distribution is less, and same profile difference of hardness HRC2-5, without defects such as quenching soft spots.The impact property of this abrasion-proof steel ball is good, and the impact value of abrading-ball can reach 20-25J/cm
2.
Embodiment
Embodiment mono-
A kind of shot-blasting machine shot steel, the chemical composition of described steel is made up of following component by weight percentage: C:0.65, Si:0.15, Mn:1.5, P :≤0.020, S :≤0.020, Cr:0.8, Ni:0.3, V:0.08, Al:0.02, Cu:0.5, surplus is Fe and inevitable impurity.
Embodiment bis-
A kind of shot-blasting machine shot steel, the chemical composition of described steel is made up of following component by weight percentage: C:0.75, Si:0.05, Mn:1.7, P :≤0.020, S :≤0.020, Cr:0.6, Ni:0.5, V:0.06, Al:0.04, Cu:0.3, surplus is Fe and inevitable impurity.
Embodiment tri-
A kind of shot-blasting machine shot steel, the chemical composition of described steel is made up of following component by weight percentage: C:0.68, Si:0.12, Mn:1.55, P :≤0.020, S :≤0.020, Cr:0.75, Ni:0.35, V:0.075, Al:0.025, Cu:0.45, surplus is Fe and inevitable impurity.
Embodiment tetra-
A kind of shot-blasting machine shot steel, the chemical composition of described steel is made up of following component by weight percentage: C:0.72, Si:0.08, Mn:1.65, P :≤0.020, S :≤0.020, Cr:0.65, Ni:0.45, V:0.065, Al:0.035, Cu:0.35, surplus is Fe and inevitable impurity.
Embodiment five
A kind of shot-blasting machine shot steel, the chemical composition of described steel is made up of following component by weight percentage: C:0.70, Si:0.10, Mn:1.60, P :≤0.020, S :≤0.020, Cr:0.70, Ni:0.40, V:0.070, Al:0.030, Cu:0.40, surplus is Fe and inevitable impurity.
Claims (3)
1. a shot-blasting machine shot steel, is characterized in that, the chemical composition of described steel is made up of following component by weight percentage: C:0.65-0.75, Si:0.05-0.15, Mn:1.5-1.7, P :≤0.020, S :≤0.020, Cr:0.6-0.8, Ni:0.3-0.5, V:0.06-0.08, Al:0.02-0.04, Cu:0.3-0.5, surplus is Fe and inevitable impurity.
2. a kind of shot-blasting machine shot steel as claimed in claim 1, is characterized in that, the chemical composition of described steel is made up of following component by weight percentage: C:0.68-0.72, Si:0.08-0.12, Mn:1.55-1.65, P :≤0.020, S :≤0.020, Cr:0.65-0.75, Ni:0.35-0.45, V:0.065-0.075, Al:0.025-0.035, Cu:0.35-0.45, surplus is Fe and inevitable impurity.
3. a kind of shot-blasting machine shot steel as claimed in claim 2, is characterized in that, the chemical composition of described steel is made up of following component by weight percentage: C:0.70, Si:0.10, Mn:1.60, P :≤0.020, S :≤0.020, Cr:0.70, Ni:0.40, V:0.070, Al:0.030, Cu:0.40, surplus is Fe and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435826.1A CN103789700A (en) | 2012-11-03 | 2012-11-03 | Steel for steel shots of shot blasting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435826.1A CN103789700A (en) | 2012-11-03 | 2012-11-03 | Steel for steel shots of shot blasting machine |
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| Publication Number | Publication Date |
|---|---|
| CN103789700A true CN103789700A (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210435826.1A Pending CN103789700A (en) | 2012-11-03 | 2012-11-03 | Steel for steel shots of shot blasting machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841678A (en) * | 2017-11-13 | 2018-03-27 | 江苏飞腾铸造机械有限公司 | A kind of ball blast technique pellet and preparation method thereof |
| CN107841684A (en) * | 2017-11-13 | 2018-03-27 | 江苏飞腾铸造机械有限公司 | A kind of shot-blasting machine pellet and its preparation technology |
-
2012
- 2012-11-03 CN CN201210435826.1A patent/CN103789700A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841678A (en) * | 2017-11-13 | 2018-03-27 | 江苏飞腾铸造机械有限公司 | A kind of ball blast technique pellet and preparation method thereof |
| CN107841684A (en) * | 2017-11-13 | 2018-03-27 | 江苏飞腾铸造机械有限公司 | A kind of shot-blasting machine pellet and its preparation technology |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140514 |