CN106381363B - A kind of heavy slide calliper rule hinge - Google Patents

A kind of heavy slide calliper rule hinge Download PDF

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CN106381363B
CN106381363B CN201610723961.4A CN201610723961A CN106381363B CN 106381363 B CN106381363 B CN 106381363B CN 201610723961 A CN201610723961 A CN 201610723961A CN 106381363 B CN106381363 B CN 106381363B
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calliper rule
slide calliper
heavy slide
rule hinge
hinge
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CN106381363A (en
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蒋建平
蒋乾
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NINGBO QIANHAO METAL PRODUCT CO Ltd
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NINGBO QIANHAO METAL PRODUCT CO Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0087—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for chains, for chain links
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium
    • C25D3/06—Electroplating: Baths therefor from solutions of chromium from solutions of trivalent chromium
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections

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Abstract

The present invention relates to one kind made of steel alloy heavy slide calliper rule hinge, belong to alloy material processing technique field.The component and its mass percent of steel alloy are C0.10 0.15%, Cr0.4 0.6%, Si0.14 0.20%, Mn0.8 1.15%, Al0.03 0.05%, N0.008 0.015%, Mo0.25 0.35%, Cu0.025 0.04%, S0.005 0.022%, V0.08 0.15%, RE0.08 0.15%, P≤0.015%, and surplus is Fe and inevitable impurity.The heavy slide calliper rule hinge of the present invention is processed into using the rational steel alloy of compatibility, and the dual heat treatment of tempering is increased temperature by first quenching, re-plating, passivation, the Seal treatment of silanization treatment, enter the corrosion resistance for improving heavy slide calliper rule hinge, temperature tolerance and mechanical performance.

Description

A kind of heavy slide calliper rule hinge
Technical field
The present invention relates to a kind of heavy slide calliper rule hinge, belong to alloy material processing technique field.
Background technology
Steel is applied to the various aspects in industrial production and life, has in the live and work of the mankind particularly significant Effect, be development in science and technology basis, but steel easy-to-rust and tarnishing processes are considerably complicated in an atmosphere, to industrial production and people Life produce different degrees of adverse effect, bring unnecessary economic loss.In China, according to Chinese industrial and natural ring Border Investigation On Corrosion project team investigation result in 2008 shows that direct economic loss passes through indirectly up to 230,000,000,000 yuan as caused by corrosion Ji loss is 5000~600,000,000,000 yuan, equivalent to the 5% of China's gross national product then.Therefore, research prevents steel corrosion Method just become critically important.
Hinge is also known as hinge and is for connection to two solids and allows to make the mechanical device relatively rotated between the two.Hinge It can be made up of moveable component, or be made up of folding material.Heavy slide calliper rule hinge due to the particularity of installation site, Requirement to hinge is also very big, and stock size is larger in more than 150MM, bearing capacity.And hinge of the prior art is general It is made up using common alloy steel of common moulding process, its performance is more general, especially intensity, temperature tolerance, corrosion-resistant Property is relatively low.
The content of the invention
It is an object of the invention to provide a kind of while have the heavy slide calliper rule of high corrosion resistance, temperature tolerance and mechanical performance Hinge.
The purpose of the present invention can be realized by following technical proposal：A kind of heavy slide calliper rule hinge, described heavy slide calliper rule Hinge is made up of steel alloy, and the component and its mass percent of the steel alloy are：C：0.10-0.15%, Cr：0.4- 0.6%th, Si：0.14-0.20%, Mn：0.8-1.15%, Al：0.03-0.05%, N：0.008-0.015%, Mo：0.25- 0.35%th, Cu：0.025-0.04%, S：0.005-0.022%, V：0.08-0.15%, RE：0.08-0.15%, P≤ 0.015%, surplus is Fe and inevitable impurity.
Carbon content, chromium content are reduced in the steel alloy of the heavy slide calliper rule hinge of the present invention, and with the addition of rare earth element, is passed through Caused synergy improves the combination property of heavy slide calliper rule hinge between each element.The same of low content chromium is added in steel alloy When, the alloying elements such as Cu, Mn, Mo, Al, Si, V are added, abandons adding the precious metal elements such as nickel, tungsten, matrix can be strengthened, obtained Alloy carbide and the alloy carbides such as MoC, VC are obtained, so as to improve the structure stability of heavy slide calliper rule hinge steel alloy.Cu、Al Addition can improve the heat dispersion of heavy slide calliper rule hinge steel alloy.Cr, Si, Al can improve the antibiosis length of steel alloy and resist Oxidability.The raising and can of heat dispersion, antibiosis length and oxidation resistance further improves the high-temperature behavior of steel alloy, makes it The life-span used in high temperature environments increases.The addition of the elements such as Mn, Si can improve the mobility of molten steel.The shadow of rare earth Sound is coordinated with alloying element, further improves the obdurability of heavy slide calliper rule hinge steel alloy.Cut with scissors in the heavy slide calliper rule of the present invention If carbon content is too low in the steel alloy of chain, the subzero treatment of work in-process can have a strong impact on intensity and hardness, if carbon content is too high, Plasticity is low, can also influence the performance in follow-up shaping and electroplating process, cause problems of crack.In order to avoid being sent out in infiltration layer Raw internal oxidition forms " the black cellular microstructure " defect, in the heavy slide calliper rule hinge steel alloy of the present invention control of Si content requirements exist Less than 0.20%.The intensity of heavy slide calliper rule hinge can be improved when adding 0.14-0.20%Si, if Si contents are less than 0.14%, The yield strength of heavy slide calliper rule hinge can then be influenceed.Although Mn is solution strengthening element, closed in the heavy slide calliper rule hinge of the present invention Jin Gangzhong, if manganese content is more than 1.15%, the plasticity and toughness of heavy slide calliper rule hinge can be greatly lowered.Heavy slide calliper rule hinge The heat resistance of steel alloy strengthens with the increase of Mo contents, and Cr, Si, Al can generate the oxide of densification in addition, is formed and protected Cuticula.Aluminium is most basic, maximally effective crystal grain thinning element, is mainly existed in steel in the form of AlN.AlN is distributed mainly on crystalline substance Boundary, play a part of pinning crystal boundary and prevent crystal grain from growing up.When aluminium content is higher in steel alloy, but nitrogen content is relatively low, then can not Forming enough AlN makes it uniformly be distributed in austenite grain boundary.AlN negligible amounts necessarily cause it to be distributed more position nail Prick crystal boundary effect substantially, less position is then unable to pinning crystal boundary and prevents growing up for austenite crystal, and this is also to produce mixed crystal, i.e., The main reason for crystal grain local anomaly is grown up.Found through constantly experiment, the aluminium content in the heavy slide calliper rule hinge steel alloy of the present invention For 0.03-0.05% when, control Al/N >=3 can ensure that mixed crystal phenomenon does not occur when in follow-up heat treatment.Present invention weight 0.08-0.15%V thinning microstructure crystal grain is added in type slide calliper rule hinge steel alloy, improves intensity and toughness.Vanadium is not only to strengthen and closed Thing formation element, or the deoxidier that steel are excellent, can and carbon combination, form high-melting-point, high rigidity, high diffusive degree and stably VC carbide, and 0.08-0.15%V and 0.8-1.15%Mn play synergy, and the common intensity and hardness for improving steel, it is former Because being that V and Mn separates out particle with the use of the Dispersed precipitate that with crystal grain thinning, can also not only obtain more high-volume fractional, Play a part of refined crystalline strengthening and dispersion-strengtherning simultaneously, the intensity of heavy slide calliper rule hinge, toughness and anticorrosive can also be improved Ability.And due to the presence of 0.08-0.15% rare earths in the heavy slide calliper rule hinge steel alloy of the present invention, together with 0.08-0.15%V The degree of heavy slide calliper rule hinge steel alloy structure refinement is enhanced, so that its diffusion coefficient reduces, mitigates its degree of oxidation.Together When carbide all more slowly, intensity and the anti-tempering for improving steel are stable for speed of separating out and coarsening rate during tempering Property.
When not adding rare earth, alloy structure of steel is very uneven, and relative carbon compound size is larger, net secondary carbon compound Thing is more obvious.When adding a small amount of rare earth, the secondary carbon compound suspension of steel alloy is obvious.Content of rare earth is got in certain limit Height, tissue is more and more uniform, more and more carefully.The increase of content of rare earth causes carbon compound Zhi Jing and ledeburite grid increasingly Carefully, so improve steel alloy impact flexibility.More containing rare earth, carbide size is smaller, and this feature is improving multiplication factor Afterwards clearly.In addition rare earth element can be also incorporated in carbon compound, or is reacted with oxygen, phosphorus, sulphur, silicon, aluminium and generated oxygen Compound etc., objectionable impurities is reduced on brittle influence.Find through constantly experiment, add in the heavy slide calliper rule hinge steel alloy of the present invention Add reduction of the 0.08-0.15% rare earths to carbon compound size, the cooperation with alloying element, in the distribution and reduction of grain boundaries The resultant effects such as the influence of harmful substance are more obvious.
In in general steel alloy, the nonmetal inclusion of the impurity element such as sulphur, phosphorus can destroy the matrix continuity of steel, in static load In the presence of lotus and dynamic loading, often as the starting point of crackle, the performance of steel alloy is influenceed, but the present invention is in order to improve heavy type Slide calliper rule hinge machinability is, it is necessary to add certain sulfur content.
The present invention also provides a kind of processing technology of heavy slide calliper rule hinge, and described processing technology comprises the following steps：
The component and mass percent dispensing of steel alloy, molten steel is smelted into by raw material as used in heavy slide calliper rule hinge, Molten steel through vacuum metling, pour into a mould, be rolled into steel plate, and by steel plate machine-shaping, obtain heavy slide calliper rule hinge component blank；
Heat treatment：Heavy slide calliper rule hinge component blank is first to heat to 560-580 DEG C, is then heated to 780-840 DEG C, is reheated Quenching Treatment is carried out with quenching oil to 960-1000 DEG C, room temperature is cooled in brine ice after being incubated 1-3 hours, then in 300- 350 DEG C of tempers, 1-2 hours are incubated, obtain heavy slide calliper rule hinge semi-finished product；
Heavy slide calliper rule hinge semi-finished product are handled into 30-50min in 38-45 DEG C of electroplate liquid, it is passivated to handle, at closing Manage to obtain heavy slide calliper rule hinge finished product.
The present invention increases temperature the heavy slide calliper rule hinge component blank of machine-shaping by quenching the dual heat treatment of tempering, in height Post-curing effect occurs during temperature tempering, with the rise of temperature, intensity, the hardness of steel reduce, plasticity, toughness liter It is high.Then electroplated in blank surface, form corrosion-resistant, wear-resisting chromium coating, then it is passivated, Seal treatment, enters one Step improves the combination property of heavy slide calliper rule hinge, especially corrosion resistance, hardness and intensity.In addition, in raw material steel-making of the present invention Using vacuum metling.Oxygen content and non-metallic inclusion in steel alloy, especially oxide, to heavy slide calliper rule hinge steel alloy Fatigue life be sufficiently reflected, therefore, the present invention use vacuum metling, improve the degree of purity of steel alloy, Jin Erti The contact fatigue property of high heavy slide calliper rule hinge, improves its service life.It is reduced to by vacuum metling oxygen content from 28mg/kg 16mg/kg, oxide aggregate are reduced to 44.8mg/kg from 64.9mg/kg, and contact fatigue life when survival rate is 50% improves 29%, contact fatigue life improves 20% when survival rate is 95%.
Preferably, 560-580 DEG C first is warming up to 7-10 DEG C/min speed in heat treatment, then with 6-10 DEG C/min's Speed is warming up to 780-840 DEG C, then rises to 960-1000 DEG C with 10-12 DEG C/min speed.
In the processing technology of above-mentioned heavy slide calliper rule hinge, the composition and ratio of electroplate liquid are Cr2O3:180-220g/L, H2SO4：1.5-2.0g/L, surplus are deionized water.The thickness of the chromium coating formed by above-mentioned electroplating processes on its surface is 5- 20μm。
Preferably, being electroplated in three stages successively during plating, the current density of first stage is 2.0-2.5A/dm2, Electroplating time is 5-8min, and the current density of second stage is 2.5-3.5A/dm2, electroplating time 15-30min, second stage Current density be 3.6-3.8A/dm2, electroplating time 10-12min.Different current densities is used in the different stages, with Time is gradually increased current density, is advantageous to the uniform deposition of film, prevents from depositing uneven caused obscission.
In the processing technology of above-mentioned heavy slide calliper rule hinge, Seal treatment is that heavy slide calliper rule hinge semi-finished product are submerged initially in into silicon Silanization treatment is carried out in alkane reagent, takes out and handles 50-150s in confining liquid again after drying, the wherein composition of confining liquid is 7- 11g/L Na2MoO4.H2O, 10-15g/L phosphate, 10-30g/L phosphoric acid, pH 4.2-4.6, the temperature of Seal treatment is 55- 62℃。
Silanization treatment is first carried out before molybdate solution Seal treatment in the heavy slide calliper rule hinge processing of the present invention, further Improve its decay resistance.After molybdate solution Seal treatment, the heavy more continuous whole densification of slide calliper rule hinge surface film layer. Molybdate is preferably filled with the pin hole and micro-crack of silane film, and good physical barriers effect is served to matrix, is reduced The possibility that matrix is corroded.With the extension of molybdate off-period, corroded area first reduces, and corrosion resistance improves.But work as After off-period is more than 120s, corroded area increase, corrosion resistance is gradually reduced.Its reason is that the plating zinc-nickel of silanization is heavy Slide calliper rule hinge has been first filled with the hole of silane film after being immersed in molybdate solution, anti-corrosion capability improves；With Seal treatment The increase of time, the thickness of Molybdate Conversion Film are continuously increased, and anti-corrosion capability continues to increase, and are reached most during to Seal treatment 100s Good state；Thereafter continue to increase above 150s with close process time, cracking phenomena can occur for conversion film, and be increasingly becoming Corrosion proof Dominated Factors, cause heavy slide calliper rule hinge surface film layer etch resistant properties globality that downward trend is presented.
Preferably, temperature during silanization treatment is 32-38 DEG C, pH 3.5-4.5, time 80-100s.
Further preferably, the methanol solution and deionization that described silane reagent passes through 7% vinyltrimethoxy silane Water is (4-8) by volume:(92-96) mixes hydrolysis 1-2h and is made.
The silane reagent synthesis used in the present invention is simple, and this is pollution-free, and silanization treatment process is simple, the silane reagent Molecule contain X3Si(CH2) nY structures (wherein, X represents hydrolyzable groups, and Y represents organo-functional group).Organo functional silanes Hydrolyzable is silanol Si-OH, and silanol hydroxyl forms hydrogen bond in metal base surface, and further dehydration forms Si-O-M, and (M is metal Matrix), with Covalent bonding together, while silanol is intermolecular is mutually condensed into Si-O-Si chains, and final polymerization forms thicker three dimensional network Network layer, is covered in metal base surface, so as to increase substantially the corrosion resistance of heavy slide calliper rule hinge base body.
Compared with prior art, the invention has the advantages that：
1st, the components compatibility of the heavy slide calliper rule hinge of the present invention is reasonable, passes through caused association between its component and its element Same-action, improve the performances such as the hardness, intensity, corrosion resistance of heavy slide calliper rule hinge.
2nd, the heavy slide calliper rule hinge of the present invention increases temperature the dual heat treatment of tempering by first quenching, then in its electroplating surface, The Seal treatment of silanization treatment is carried out after passivated, further improves corrosion resistance, temperature tolerance and the machine of heavy slide calliper rule hinge Tool performance.
Embodiment
It is the specific embodiment of the present invention below, technical scheme is further described, but the present invention is simultaneously It is not limited to these embodiments.
Embodiment 1
Raw material is made steel：The component and mass percent dispensing of steel alloy as used in heavy slide calliper rule hinge：C：0.12%th, Cr：0.5%th, Si：0.16%th, Mn：0.98%th, Al：0.042%th, N：0.012%th, Mo：0.28%th, Cu：0.035%th, S： 0.015%th, V：0.12%th, RE：0.12%th, P≤0.015%, surplus are Fe and inevitable impurity；Raw material is smelted into steel Water, molten steel through vacuum metling, pour into a mould, be rolled into steel plate, and by steel plate machine-shaping, obtain heavy slide calliper rule hinge component blank.
Heavy slide calliper rule hinge component blank is first heated to 570 DEG C with 8 DEG C/min speed, then added with 8 DEG C/min speed Heat is to 800 DEG C, then is heated to 980 DEG C with 11 DEG C/min speed and carries out Quenching Treatment with quenching oil, after being incubated 2 hours containing Room temperature is cooled in 40-60%NaCl brine ice, then in 320 DEG C of tempers, is incubated 1.5 hours, obtains heavy slide calliper rule hinge Chain semi-finished product.
Heavy slide calliper rule hinge semi-finished product are handled into 40min in 42 DEG C of electroplate liquid, the composition and ratio of electroplate liquid are Cr2O3:200g/L, H2SO4：1.8g/L, surplus are deionized water；Electroplated in three stages successively during plating, the first stage Current density is 2.2A/dm2, electroplating time 6min, the current density of second stage is 2.8A/dm2, electroplating time is 22min, the current density of second stage is 3.7A/dm2, electroplating time 11min；Then the semi-finished product after plating are first passivated Processing, then immerse silane reagent (silane reagent is by the methanol solution of 7% vinyltrimethoxy silane with deionized water by body Product is than being 6:94, which mix hydrolysis 1.5h, is made) at 36 DEG C, pH carries out silanization treatment 90s under conditions of being 4.0, takes out Heavy slide calliper rule hinge finished product of the invention can be obtained by handling 100s in confining liquid again after drying, and the wherein composition of confining liquid is 8g/L Na2MoO4.H2O, 12g/L phosphate, 20g/L phosphoric acid, pH 4.4, the temperature of Seal treatment is 58 DEG C.
Embodiment 2
Raw material is made steel：The component and mass percent dispensing of steel alloy as used in heavy slide calliper rule hinge：C：0.14%th, Cr：0.45%th, Si：0.18%th, Mn：1.05%th, Al：0.038%th, N：0.010%th, Mo：0.28%th, Cu：0.038%th, S： 0.018%th, V：0.1%th, RE：0.14%th, P≤0.015%, surplus are Fe and inevitable impurity；Raw material is smelted into steel Water, molten steel through vacuum metling, pour into a mould, be rolled into steel plate, and by steel plate machine-shaping, obtain heavy slide calliper rule hinge component blank.
Heavy slide calliper rule hinge component blank is first heated to 575 DEG C with 9 DEG C/min speed, then added with 9 DEG C/min speed Heat is to 720 DEG C, then is heated to 970 DEG C with 11 DEG C/min speed and carries out Quenching Treatment with quenching oil, after being incubated 2.5 hours containing Have and room temperature is cooled in 40-60%NaCl brine ice, then in 340 DEG C of tempers, be incubated 2 hours, obtain heavy slide calliper rule hinge Chain semi-finished product.
Heavy slide calliper rule hinge semi-finished product are handled into 45min in 40 DEG C of electroplate liquid, the composition and ratio of electroplate liquid are Cr2O3:210g/L, H2SO4：1.6g/L, surplus are deionized water；Electroplated in three stages successively during plating, the first stage Current density is 2.4A/dm2, electroplating time 7min, the current density of second stage is 3.2A/dm2, electroplating time is 18min, the current density of second stage is 3.6A/dm2, electroplating time 11min；Then the semi-finished product after plating are first passivated Processing, then immerse silane reagent (silane reagent is by the methanol solution of 7% vinyltrimethoxy silane with deionized water by body Product is than being 5:95, which mix hydrolysis 1.2h, is made) at 34 DEG C, pH carries out silanization treatment 85s under conditions of being 4.2, takes out Heavy slide calliper rule hinge finished product of the invention can be obtained by handling 120s in confining liquid again after drying, and the wherein composition of confining liquid is 10g/ L Na2MoO4.H2O, 14g/L phosphate, 16g/L phosphoric acid, pH 4.5, the temperature of Seal treatment is 60 DEG C.
Embodiment 3
Raw material is made steel：The component and mass percent dispensing of steel alloy as used in heavy slide calliper rule hinge：C：0.15%th, Cr：0.4%th, Si：0.20%th, Mn：0.8%th, Al：0.05%th, N：0.015%th, Mo：0.25%th, Cu：0.04%th, S： 0.005%th, V：0.15%th, RE：0.08%th, P≤0.015%, surplus are Fe and inevitable impurity；Raw material is smelted into steel Water, molten steel through vacuum metling, pour into a mould, be rolled into steel plate, and by steel plate machine-shaping, obtain heavy slide calliper rule hinge component blank.
Heavy slide calliper rule hinge component blank is first heated to 560 DEG C with 7 DEG C/min speed, then added with 6 DEG C/min speed Heat is to 780 DEG C, then is heated to 960 DEG C with 10 DEG C/min speed and carries out Quenching Treatment with quenching oil, after being incubated 3 hours containing Room temperature is cooled in 40-60%NaCl brine ice, then in 300 DEG C of tempers, 2 hours is incubated, obtains heavy slide calliper rule hinge Semi-finished product.
Heavy slide calliper rule hinge semi-finished product are handled into 30min in 45 DEG C of electroplate liquid, the composition and ratio of electroplate liquid are Cr2O3:180g/L, H2SO4：1.5g/L, surplus are deionized water；Electroplated in three stages successively during plating, the first stage Current density is 2.5A/dm2, electroplating time 5min, the current density of second stage is 3.5A/dm2, electroplating time is 15min, the current density of second stage is 3.8A/dm2, electroplating time 10min；Then the semi-finished product after plating are first passivated Processing, then immerse silane reagent (silane reagent is by the methanol solution of 7% vinyltrimethoxy silane with deionized water by body Product is than being 4:96, which mix hydrolysis 2h, is made) at 32 DEG C, pH carries out silanization treatment 100s under conditions of being 3.5, takes out Heavy slide calliper rule hinge finished product of the invention can be obtained by handling 150s in confining liquid again after drying, and the wherein composition of confining liquid is 11g/ L Na2MoO4.H2O, 10g/L phosphate, 30g/L phosphoric acid, pH 4.2, the temperature of Seal treatment is 55 DEG C.
Embodiment 4
Raw material is made steel：The component and mass percent dispensing of steel alloy as used in heavy slide calliper rule hinge：C：0.10%th, Cr：0.6%th, Si：0.14%th, Mn：1.15%th, Al：0.03%th, N：0.008%th, Mo：0.35%th, Cu：0.025%th, S： 0.022%th, V：0.08%th, RE：0.15%th, P≤0.015%, surplus are Fe and inevitable impurity；Raw material is smelted into steel Water, molten steel through vacuum metling, pour into a mould, be rolled into steel plate, and by steel plate machine-shaping, obtain heavy slide calliper rule hinge component blank.
Heavy slide calliper rule hinge component blank is first heated to 580 DEG C with 10 DEG C/min speed, then with 10 DEG C/min speed Be heated to 840 DEG C, then be heated to 1000 DEG C with 12 DEG C/min speed and carry out Quenching Treatment with quenching oil, after insulation 1 hour Room temperature is cooled in brine ice containing 40-60%NaCl, then in 350 DEG C of tempers, obtains heavy slide calliper rule hinge semi-finished product.
Heavy slide calliper rule hinge semi-finished product are handled into 50min in 38 DEG C of electroplate liquid, the composition and ratio of electroplate liquid are Cr2O3:220g/L, H2SO4：2.0g/L, surplus are deionized water；Electroplated in three stages successively during plating, the first stage Current density is 2.0A/dm2, electroplating time 8min, the current density of second stage is 2.5A/dm2, electroplating time is 30min, the current density of second stage is 3.6A/dm2, electroplating time 12min；Then the semi-finished product after plating are first passivated Processing, then immerse silane reagent (silane reagent is by the methanol solution of 7% vinyltrimethoxy silane with deionized water by body Product is than being 8:92, which mix hydrolysis 1h, is made) at 38 DEG C, pH carries out silanization treatment 80s under conditions of being 4.5, takes out dry Heavy slide calliper rule hinge finished product of the invention can be obtained by handling 50s in confining liquid again after dry, and the wherein composition of confining liquid is 7g/L's Na2MoO4.H2O, 15g/L phosphate, 10g/L phosphoric acid, pH 4.6, the temperature of Seal treatment is 62 DEG C.
Comparative example 1
With differing only in for embodiment 1, heavy slide calliper rule hinge is processed using common alloy steel.
Comparative example 2
With differing only in for embodiment 1, heavy slide calliper rule are processed using ordinary plating process (such as electrogalvanizing or electrodeposited chromium) Hinge.
Comparative example 3
With differing only in for embodiment 1, handled using common sealer, i.e., without silanization treatment.
The technique that explanation is not known in the above-described embodiments is the technique of normal conventional in the prior art, such as melting, is poured Note, rolling, Passivation Treatment etc..
The heavy slide calliper rule hinge for processing to obtain in embodiment 1-4 and comparative example 1-3 is subjected to performance test, test result is such as Shown in table 1.
Table 1：The obtained performance test of heavy slide calliper rule hinge is processed in embodiment 1-4 and comparative example 1-3
As known from Table 1, the heavy slide calliper rule hinge of the present invention is processed into using the rational steel alloy of compatibility, and is added by first quenching The dual heat treatment of high tempering, then in its electroplating surface, the Seal treatment of silanization treatment is carried out after passivated, is further carried Corrosion resistance, temperature tolerance and the mechanical performance of high heavy slide calliper rule hinge.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led The technical staff in domain can be made various modifications or supplement to described specific embodiment or be substituted using similar mode, but simultaneously Do not deviate by the spirit of the present invention or surmount scope defined in appended claims.

Claims (5)

1. a kind of heavy slide calliper rule hinge, it is characterised in that the heavy slide calliper rule hinge is made up of steel alloy, the group of the steel alloy It is into element and its mass percent：C：0.10-0.15%、Cr：0.4-0.6%、Si：0.14-0.20%、Mn：0.8-1.15%、 Al：0.03-0.05%、N：0.008-0.015%、Mo：0.25-0.35%、Cu：0.025-0.04%、S：0.005-0.022%、V： 0.08-0.15%、RE：0.08-0.15%, P≤0.015%, surplus is Fe and inevitable impurity；The heavy slide calliper rule hinge Processing technology comprise the following steps：
The component and mass percent dispensing of steel alloy, molten steel, molten steel are smelted into by raw material as used in heavy slide calliper rule hinge Through vacuum metling, pour into a mould, be rolled into steel plate, and by steel plate machine-shaping, obtain heavy slide calliper rule hinge component blank；
Heavy slide calliper rule hinge component blank is first to heat to 560-580 DEG C, 780-840 DEG C is then heated to, is again heated to 960-1000 DEG C carry out Quenching Treatment with quenching oil, room temperature is cooled in brine ice after being incubated 1-3 hours, then in 300-350 DEG C of tempering Processing, 1-2 hours are incubated, obtain heavy slide calliper rule hinge semi-finished product；
Heavy slide calliper rule hinge semi-finished product are handled into 30-50min in 38-45 DEG C of electroplate liquid, at last passivated processing, closing Manage to obtain heavy slide calliper rule hinge finished product；
Wherein the composition of electroplate liquid and ratio are Cr2O3:180-220g/L, H2SO4：1.5-2.0g/L, surplus are deionized water；Envelope Close processing and carry out silanization treatment for heavy slide calliper rule hinge semi-finished product are submerged initially in silane reagent, take out and closed again after drying 50-150s is handled in liquid, the wherein composition of confining liquid is 7-11g/L Na2MoO4•H2O, 10-15g/L phosphate, 10-30g/L Phosphoric acid, pH 4.2-4.6, the temperature of Seal treatment is 55-62 DEG C.
2. heavy slide calliper rule hinge according to claim 1, it is characterised in that first with 7-10 DEG C/min speed in heat treatment 560-580 DEG C is warming up to, then 780-840 DEG C is warming up to 6-10 DEG C/min speed, then with 10-12 DEG C/min speed liter To 960-1000 DEG C.
3. heavy slide calliper rule hinge according to claim 1, it is characterised in that electroplated in three stages successively during plating, The current density of first stage is 2.0-2.5A/dm2, electroplating time 5-8min, the current density of second stage is 2.5- 3.5A/dm2, electroplating time 15-30min, the current density of second stage is 3.6-3.8A/dm2, electroplating time 10- 12min。
4. heavy slide calliper rule hinge according to claim 1, it is characterised in that temperature during silanization treatment is 32-38 DEG C, PH is 3.5-4.5, time 80-100s.
5. heavy slide calliper rule hinge according to claim 1, it is characterised in that described silane reagent passes through 7% vinyl three The methanol solution of methoxy silane is by volume with deionized water（4-8）:（92-96）Hydrolysis 1-2h is mixed to be made.
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