CN103805895A - Mold steel for cold extrusion of titanium spectacle frame - Google Patents
Mold steel for cold extrusion of titanium spectacle frame Download PDFInfo
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- CN103805895A CN103805895A CN201210444489.2A CN201210444489A CN103805895A CN 103805895 A CN103805895 A CN 103805895A CN 201210444489 A CN201210444489 A CN 201210444489A CN 103805895 A CN103805895 A CN 103805895A
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Abstract
The present invention discloses a mold steel for cold extrusion of a titanium spectacle frame, wherein the chemical components of the mold steel comprise, by weight, 0.70-0.90% of C, 0.3-0.5% of Si, 1.3-1.5% of Mn, 6.5-7.5% of Cr, 0.5-0.7% of Ni, 0.1-0.3% of V, 0.2-0.4% of Mo, 0.2-0.4% of W, 0.02-0.04% of N, 0.001-0.003% of B, less than or equal to 0.015% of S, less than or equal to 0.015% of P, and the balance of Fe and unavoidable impurities.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, relate in particular to a kind of titanium spectacle frame cold extrusion die steel.
Background technology
Compression molding has become production, especially the main processing means of household electrical appliances, daily necessities.The working conditions of mould and the requirement of performance is varied, thereby select different steel classes for different service conditions.Performance-the cost ratio of die steel is the parameter of weighing its economic benefit, and cold extrusion die, except requiring the crushing resistance close with other cold-working moulds (being hardness), also requires high as far as possible obdurability.The mould that requires again high life (large as far as possible punching press number of packages) for processing high-strength material, also needs certain fatigue resistance simultaneously.
Existing for make the material of the spectacle frame of stainless steel, titanium metal or the mould of high-grade metal button generally adopt Cr12Mo1V1 steel make, the composition of alloy is: C1.4～1.6%, Si0.6%, Mn0.6%, Cr11～13%, Co1%, V1.1%, Mo0.7～1.2%, S≤0.03%, P≤0.03%.This alloy is high because of carbon content, what carbide annealing process that don't work, and its Spheroidizing Annealing hardness can be lower than HRC15, and user makes mould by " hard public mould again " method, easily makes " main mould " to produce the phenomenon of bursting apart.When mould uses, lines are clear not, full, and fine degree all can not meet the requirement of producing expensive goods.
Chinese invention patent (publication number is CN1116661) discloses the empty hard tool steel of a kind of micro-distortion, carbon containing C1.00～1.10%, manganese Mn0.60～0.80%, silicon Si0.50～0.70%, chromium Cr3.70～4.20%, molybdenum Mo0.80～1.00%, vanadium V0.40～0.50%, sulphur S < 0.02%, phosphorus P < 0.02%, all the other are the content of iron Fe.Heat treatment deformation is atomic, annealing hardness HB200～220, air quenching hardness HRC58～62, hardening capacity is high, can extensively substitute oil quenching work, die steel, for light cut and thin, long, thin cutting tool at a slow speed, cold-work die, model and roll etc., instrument and Mold Making process simplification, high life.But this tool steel and Cr
12mo
1v
1steel is the same, all contains the Mo than high level, now because Mo on world market lacks, and price comparison costliness, the cost of therefore producing alloy is higher.
Chinese invention patent (publication number is CN1166533) discloses a kind of novel Ledeburite-less high-alloy cold-working die steel, its composition is: C0.4～1.4%, Cr7.0～10.0%, Mo1.0～2.0%, V2.0～8.0%, because carbon content is low, thus in the time of ingot casting condensation, do not form Lai Shi eutectic, thereby there is not carbide segregation and thick carbide.After specific thermal treatment (comprising controlled no inner oxidation over-carburizing, low temperature quenching and low-temperaturetempering), centre hardness is in about HRC55, and textura epidermoidea and hardness and famous powder cold-work die steel V-4, V-10 are suitable.But this alloy contains the Mo than high level equally, V, therefore production cost improves greatly.
Summary of the invention
The object of the invention is to propose a kind of titanium spectacle frame cold extrusion die steel, this die steel, by the adjustment to chemical composition, reduces the content of Mo, V, reduces production costs, keep this die steel to there is suitable obdurability and hardness simultaneously, be suitable for the cold extrusion of titanium spectacle frame and use.
For reaching this object, the present invention by the following technical solutions:
A kind of titanium spectacle frame cold extrusion die steel, the chemical composition of this die steel is made up of following component by weight percentage: C:0.70-0.90, Si:0.3-0.5, Mn:1.3-1.5, Cr:6.5-7.5, Ni:0.5-0.7, V:0.1-0.3, Mo:0.2-0.4, W:0.2-0.4, N:0.02-0.04, B:0.001-0.003, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
Preferably, the chemical composition of this die steel is made up of following component by weight percentage: C:0.75-0.85, Si:0.35-0.45, Mn:1.35-1.45, Cr:6.8-7.2, Ni:0.55-0.65, V:0.15-0.25, Mo:0.25-0.35, W:0.25-0.35, N:0.025-0.035, B:0.0015-0.0025, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
Most preferably, the chemical composition of this die steel is made up of following component by weight percentage: C:0.80, Si:0.40, Mn:1.40, Cr:7.0, Ni:0.60, V:0.20, Mo:0.30, W:0.30, N:0.030, B:0.0020, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
The effect of main alloy element of the present invention is as follows:
Carbon, the various carbide that it and carbide forming element form are vital tissue factors that steel obtains hot strength.Appropriate excess carbon compound can stop grain growth, improves wear resistance.But carbon content is too high, can make steel lose plasticity, in addition because carbide is too much, skewness, also can cause that mould bursts apart.
Silicon, its objective is the hardening capacity, temper resistance and the matrix strength that improve steel, guarantees hot strength, hot hardness and the thermostability of steel.
Manganese, its objective is the hardening capacity that improves steel, eliminates the harmful effect that sulphur exists simultaneously.
Chromium, Main Function is hardening capacity and the oxidation-resistance that improves steel, and chromium is a kind of strong carbide forming element, and it can form multiple compounds with carbon, and forms compound compound with iron carbon, but too high chromium content impairs the hot strength of steel.
Vanadium, molybdenum, tungsten are carbide.Add vanadium can prevent the thermo-responsive tendency of mistake of steel, improve hot hardness and the hot strength of steel.Add molybdenum can improve hardening capacity and heat resistance.Add tungsten to play the effect that improves heat resistance.
Nickel, is non-carbide forming element, improves the intensity of steel by solution strengthening mode, plasticity, toughness is also improved simultaneously.Meanwhile, add nickel can reduce the critical quenching rate of steel, thereby the hardening capacity of steel is improved greatly.In steel, chromium nickel coexists, and can greatly improve the comprehensive mechanical performance of steel.
N, B: the hardness and the wear resistance that improve mould.
The present invention has following beneficial effect:
The Spheroidizing Annealing hardness of die steel of the present invention can reach below HRC3-4, under this hardness, user makes mould by " hard public multiple mould " method, just can not make " main mould " to produce the phenomenon of bursting apart, after this die steel quenches, hardness is HRC56-58, and the C r of same rigidity
12mo
1v
1all be better than the latter than toughness and wear resistance, the life-span is improved 60-80%, and precious alloy constituent content is low, and cost is low.Die steel of the present invention is suitable for the Mold Making of titanium metal spectacle frame.
Embodiment
Embodiment mono-
A kind of titanium spectacle frame cold extrusion die steel, the chemical composition of this die steel is made up of following component by weight percentage: C:0.70, Si:0.5, Mn:1.3, Cr:7.5, Ni:0.5, V:0.3, Mo:0.2, W:0.4, N:0.02, B:0.003, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
Embodiment bis-
A kind of titanium spectacle frame cold extrusion die steel, the chemical composition of this die steel is made up of following component by weight percentage: C:0.90, Si:0.3, Mn:1.5, Cr:6.5, Ni:0.7, V:0.1, Mo:0.4, W:0.2, N:0.04, B:0.001, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
Embodiment tri-
A kind of titanium spectacle frame cold extrusion die steel, the chemical composition of this die steel is made up of following component by weight percentage: C:0.75, Si:0.45, Mn:1.35, Cr:7.2, Ni:0.55, V:0.25, Mo:0.25, W:0.35, N:0.025, B:0.0025, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
Embodiment tetra-
A kind of titanium spectacle frame cold extrusion die steel, the chemical composition of this die steel is made up of following component by weight percentage: C:0.85, Si:0.35, Mn:1.45, Cr:6.8, Ni:0.65, V:0.15, Mo:0.35, W:0.25, N:0.035, B:0.0015, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
Embodiment five
A kind of titanium spectacle frame cold extrusion die steel, the chemical composition of this die steel is made up of following component by weight percentage: C:0.80, Si:0.4, Mn:1.4, Cr:7.0, Ni:0.6, V:0.2, Mo:0.3, W:0.3, N:0.03, B:0.002, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
Claims (3)
1. a titanium spectacle frame cold extrusion die steel, is characterized in that, the chemical composition of this die steel is made up of following component by weight percentage: C:0.70-0.90, Si:0.3-0.5, Mn:1.3-1.5, Cr:6.5-7.5, Ni:0.5-0.7, V:0.1-0.3, Mo:0.2-0.4, W:0.2-0.4, N:0.02-0.04, B:0.001-0.003, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
2. a kind of titanium spectacle frame cold extrusion die steel as claimed in claim 1, is characterized in that, the chemical composition of this die steel is made up of following component by weight percentage: C:0.75-0.85, Si:0.35-0.45, Mn:1.35-1.45, Cr:6.8-7.2, Ni:0.55-0.65, V:0.15-0.25, Mo:0.25-0.35, W:0.25-0.35, N:0.025-0.035, B:0.0015-0.0025, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
3. a kind of titanium spectacle frame cold extrusion die steel as claimed in claim 2, is characterized in that, the chemical composition of this die steel is made up of following component by weight percentage: C:0.80, Si:0.40, Mn:1.40, Cr:7.0, Ni:0.60, V:0.20, Mo:0.30, W:0.30, N:0.030, B:0.0020, S≤0.015, P≤0.015, surplus is Fe and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210444489.2A CN103805895A (en) | 2012-11-08 | 2012-11-08 | Mold steel for cold extrusion of titanium spectacle frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210444489.2A CN103805895A (en) | 2012-11-08 | 2012-11-08 | Mold steel for cold extrusion of titanium spectacle frame |
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| Publication Number | Publication Date |
|---|---|
| CN103805895A true CN103805895A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210444489.2A Pending CN103805895A (en) | 2012-11-08 | 2012-11-08 | Mold steel for cold extrusion of titanium spectacle frame |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245663A (en) * | 2017-06-02 | 2017-10-13 | 太仓市龙华塑胶有限公司 | A kind of die steel material |
-
2012
- 2012-11-08 CN CN201210444489.2A patent/CN103805895A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245663A (en) * | 2017-06-02 | 2017-10-13 | 太仓市龙华塑胶有限公司 | A kind of die steel material |
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Application publication date: 20140521 |