CN107164756B - A kind of laser melting coating metal dust for repairing H13 mould steel - Google Patents

A kind of laser melting coating metal dust for repairing H13 mould steel Download PDF

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CN107164756B
CN107164756B CN201610714902.0A CN201610714902A CN107164756B CN 107164756 B CN107164756 B CN 107164756B CN 201610714902 A CN201610714902 A CN 201610714902A CN 107164756 B CN107164756 B CN 107164756B
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powder
steel
laser melting
metal dust
mould
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CN107164756A (en
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王淼辉
葛学元
杜博睿
梁金明
范斌
刘恒三
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China Machinery New Material Research Institute (Zhengzhou) Co.,Ltd.
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Beijing Institute Of Light Quantitative Science And Research Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • 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
    • C22C38/12—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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laser Beam Processing (AREA)
  • Powder Metallurgy (AREA)

Abstract

The present invention relates to a kind of laser melting coating metal dust for repairing H13 mould steel, belong to ferrous materials manufacturing field, above-mentioned metal pulverization composition quality fraction is：0.35-0.50%C, 0.70-3.80%Si, 0.50-1.60%Mn, 2.70-4.00%Cr, 1.30-3.55%Mo, 0.30-1.55V, P≤0.030%, S≤0.030%, 1.0 4.0%B, powder size distribution：30 150 μm, mobility：15 25s/50g, composition of raw material alloying proportioning, then carry out vacuum melting steel ingot, using Frequency Induction Heating melted steel ingot, working chamber's vacuum 10‑1‑10‑2Pa, using aerosolization method powder, gases argon pressure 1 of dusting 4MPa, receive to carry out sizing after powder.Using the powder after screening, using laser melting and coating technique, different process of arranging in pairs or groups, H13 steel surfaces are repaired.

Description

A kind of laser melting coating metal dust for repairing H13 mould steel
Technical field
The invention belongs to metal material field, and in particular to a kind of laser melting coating metal dust for repairing H13 mould steel.
Background technology
H13 mould steel is used to manufacture the big forging die of shock loading, hot extruding die, precision forging die；Aluminium, copper and its alloy die cast Mould, it is the general a kind of representative grade of steel that has many uses in hot die steel.Laser melting and coating technique is a kind of surface hardening process skill Art, refer to and selected coating material is added by different filler modes in substrate surface, utilize the laser beam of high power density Be allowed to substrate surface thin layer simultaneously consolidation, and after quick solidification formed dilution factor it is extremely low, with matrix into metallurgical binding table Finishing coat, so as to significantly improve the process of the characteristic such as wear-resisting, anti-corrosion, heat-resisting, anti-oxidant of substrate surface.Melted using laser Coating technique is repaired to the H13 mould steel of broken invalid, it is possible to increase the hardness of H13 steel profile extrusion dies.Laser melting coating Metal powder material applied in process, there is vital influence for the repairing effect of H13 moulds, in lifting mould While surface quality performance, extension die life that can be different degrees of.
The content of the invention
The present invention provides metal dust of the laser melting coating with H13 mould steel is repaired, and the mass fraction of its each element is： 0.35-0.50%C, 0.70-3.80%Si, 0.50-1.60%Mn, 2.70-4.00%Cr, 1.30-3.55%Mo, 0.30- 1.55%V, P≤0.030%, S≤0.030%, 1.0-4.0%B, surplus are Fe and inevitable impurity.
Wherein：The preferred 2.5-3.5% of B preferred 2.5-3.5%, Si.
The metal dust particle diameter is：30-150 μm, mobility：15-25 s/50g.
Prepare above-mentioned laser melting coating is with the method for the metal dust for repairing H13 mould steel：Composition of raw material alloying is matched somebody with somebody Than vacuum melting steel ingot then being carried out, using Frequency Induction Heating melted steel ingot, working chamber's vacuum 10-1-10-2Pa, use Aerosolization method powder, dust gases argon pressure 1-4MPa, receives to carry out sizing after powder.
Wherein, the control of vacuum has significant impact for indexs such as powder oxygen content, the pressure control for the gases argon that dusts System is to control powder size, the core parameter of sphericity and powder formation rate, it is necessary to according to liquid stream situation and each dust period comprehensively Make accurate adjustment.
Using the powder after screening, using laser melting and coating technique, different process of arranging in pairs or groups, H13 steel surfaces are repaired.
Die wear position is machined.
Mould surface to be repaired is wiped with acetone, removes surface grease.
Laser melting coating path planning programming is carried out according to die wear position geometry, formulates technological parameter.
Cladding reparation is carried out to die wear position using semiconductor laser cladding system, using above-mentioned technological parameter：Swash 1 ~ 2kw of luminous power, spot diameter 1mm, 5 ~ 8kg/h of powder feeding rate, 500 ~ 800mm/min of laser scan rate, overlapping rate 30% ~ 40%, individual layer cladding 1 ~ 2mm of thickness, laser melting coating head has argon gas defencive function, 15 ~ 30L/min of argon flow amount.
The mould after reparation is machined out using five-axle number control machine tool, returns to the original size of mould, it is final to obtain The good H13 mould steel of surface property.
Compared with prior art, the advantage of the invention is that：
1. the metal dust has the collocation of preferred alloy content, it is capable of being combined with H13 steel matrix for fine and close consolidation, significantly The surface property of the lifting H13 steel of degree, extend the service life of H13 steel, good economy performance.
2. this metal dust of application has carried out laser melting coating reparation to the H13 steel profiles extrusion die of breakage, table has been obtained Face it is more smooth with smooth, pore-free and crackle cermet coating, substantially increase the hardness of H13 steel profile extrusion dies.
Brief description of the drawings
Fig. 1 is the microphoto for the metal dust that laser melting coating repairs H13 mould steel.
Embodiment
With reference to embodiment, the invention will be further described, but is not limited to the following example.Target in embodiment The mass fraction of each element is as shown in table 1 in product, and performance parameter is as shown in table 2, and Application Example carries out laser to H13 steel and melted Surface property is as shown in table 3 after covering reparation.
The laser melting coating of table 1 metal powder constituent for repairing H13 steel（Mass fraction, %）
Embodiment C Si Mn P S Cr Mo V B
Embodiment 1 0.39 2.5 0.8 ≤0.03 ≤0.03 2.9 2.1 0.89 2.5
Embodiment 2 0.40 3.0 0.7 ≤0.03 ≤0.03 3.0 2.2 0.95 3.2
Embodiment 3 0.42 3.5 0.85 ≤0.03 ≤0.03 3.2 1.9 1.02 3.6
Comparative example 1 0.34 0.5 0.69 0.04 0.04 2.65 1.25 0.28 0.5
Comparative example 2 0.33 0.4 0.65 0.04 0.035 2.5 1.0 0.25 0.8
The laser melting coating of the table 2 metal dust performance parameter for repairing H13 steel（Mass fraction, %）
Embodiment Granularity μm Mobility s/50g Sphericity % D50/μm
Embodiment 1 50-100 17 90 70
Embodiment 2 50-100 22 95 74
Embodiment 3 50-100 19 97 62
Comparative example 1 50-100 18 96 66
Comparative example 2 50-100 21 92 65
H13 steel surface performances after the laser melting coating of table 3 is repaired
Embodiment Hardness HRC Hardness improves percentage % Life percentage %
Embodiment 1 66 32 220
Embodiment 2 64 28 180
Embodiment 3 63 26 170
Comparative example 1 52 4 20
Comparative example 2 54 8 40
Embodiment 1
The mass fraction of its each element is：0.39%C, 2.50%Si, 0.80%Mn, 2.9%Cr, 2.1%Mo, 0.89%V, P≤ 0.030%, S≤0.030%, 2.5%B, surplus are Fe and inevitable impurity.
The metal dust particle diameter is：50-100 μm, mobility：17 s/50g, sphericity >=90%, D50=70μm。
Preparation method is：Composition of raw material alloying matches, and vacuum melting steel ingot is then carried out, using Frequency Induction Heating Melted steel ingot, working chamber's vacuum 10-1-10-2Pa, using aerosolization method powder, dust gases argon pressure 1-4MPa, receives Sizing is carried out after obtaining powder.
Using the powder after screening, using laser melting and coating technique, different process of arranging in pairs or groups, H13 steel surfaces are repaired.
Die wear position is machined.
Mould surface to be repaired is wiped with acetone, removes surface grease.
Laser melting coating path planning programming is carried out according to die wear position geometry, formulates technological parameter.
Cladding reparation is carried out to die wear position using semiconductor laser cladding system, using above-mentioned technological parameter：Swash 1 ~ 2kw of luminous power, spot diameter 1mm, 5 ~ 8kg/h of powder feeding rate, 500 ~ 800mm/min of laser scan rate, overlapping rate 30% ~ 40%, individual layer cladding 1 ~ 2mm of thickness, laser melting coating head has argon gas defencive function, 15 ~ 30L/min of argon flow amount.
The mould after reparation is machined out using five-axle number control machine tool, returns to the original size of mould, it is final to obtain The good H13 mould steel of surface property.
The mass fraction of each element is as shown in embodiment 1 in table 1 in target product.The performance parameter of the embodiment 1 such as institute of table 2 Show.Surface property is as shown in table 3 after Application Example 1 carries out laser melting coating reparation to H13 steel.
Embodiment 2
The mass fraction of its each element is：0.40%C, 3.0%Si, 0.70%Mn, 3.0%Cr, 2.2%Mo, 0.95%V, P≤ 0.030%, S≤0.030%, 3.2%B, surplus are Fe and inevitable impurity.
The metal dust particle diameter is：50-100 μm, mobility：22 s/50g, sphericity >=95%, D50=74μm。
Preparation method is：Composition of raw material alloying matches, and vacuum melting steel ingot is then carried out, using Frequency Induction Heating Melted steel ingot, working chamber's vacuum 10-1-10-2Pa, using aerosolization method powder, dust gases argon pressure 1-4MPa, receives Sizing is carried out after obtaining powder.
Using the powder after screening, using laser melting and coating technique, different process of arranging in pairs or groups, H13 steel surfaces are repaired.
Die wear position is machined.
Mould surface to be repaired is wiped with acetone, removes surface grease.
Laser melting coating path planning programming is carried out according to die wear position geometry, formulates technological parameter.
Cladding reparation is carried out to die wear position using semiconductor laser cladding system, using above-mentioned technological parameter：Swash 1 ~ 2kw of luminous power, spot diameter 1mm, 5 ~ 8kg/h of powder feeding rate, 500 ~ 800mm/min of laser scan rate, overlapping rate 30% ~ 40%, individual layer cladding 1 ~ 2mm of thickness, laser melting coating head has argon gas defencive function, 15 ~ 30L/min of argon flow amount.
The mould after reparation is machined out using five-axle number control machine tool, returns to the original size of mould, it is final to obtain The good H13 mould steel of surface property.
The mass fraction of each element is as shown in embodiment 2 in table 1 in target product.The performance parameter of the embodiment 2 such as institute of table 2 Show.Surface property is as shown in table 3 after Application Example 2 carries out laser melting coating reparation to H13 steel.
Embodiment 3
The mass fraction of its each element is：0.42%C, 3.5%Si, 0.85%Mn, 3.2%Cr, 1.9%Mo, 1.02%V, P≤ 0.030%, S≤0.030%, 3.6%B, surplus are Fe and inevitable impurity.
The metal dust particle diameter is：50-100 μm, mobility：19 s/50g, sphericity >=97%, D50=62μm。
Preparation method is：Composition of raw material alloying matches, and vacuum melting steel ingot is then carried out, using Frequency Induction Heating Melted steel ingot, working chamber's vacuum 10-1-10-2Pa, using aerosolization method powder, dust gases argon pressure 1-4MPa, receives Sizing is carried out after obtaining powder.
Using the powder after screening, using laser melting and coating technique, different process of arranging in pairs or groups, H13 steel surfaces are repaired.
Die wear position is machined.
Mould surface to be repaired is wiped with acetone, removes surface grease.
Laser melting coating path planning programming is carried out according to die wear position geometry, formulates technological parameter.
Cladding reparation is carried out to die wear position using semiconductor laser cladding system, using above-mentioned technological parameter：Swash 1 ~ 2kw of luminous power, spot diameter 1mm, 5 ~ 8kg/h of powder feeding rate, 500 ~ 800mm/min of laser scan rate, overlapping rate 30% ~ 40%, individual layer cladding 1 ~ 2mm of thickness, laser melting coating head has argon gas defencive function, 15 ~ 30L/min of argon flow amount.
The mould after reparation is machined out using five-axle number control machine tool, returns to the original size of mould, it is final to obtain The good H13 mould steel of surface property.
The mass fraction of each element is as shown in embodiment 3 in table 1 in target product.The performance parameter of the embodiment 3 such as institute of table 2 Show.Surface property is as shown in table 3 after Application Example 3 carries out laser melting coating reparation to H13 steel.
Comparative example 1
The mass fraction of its each element is：0.34%C, 0.5%Si, 0.69%Mn, 2.65%Cr, 1.25%Mo, 0.28%V, P≤ 0.030%, S≤0.030%, 0.5%B, surplus are Fe and inevitable impurity.
The metal dust particle diameter is：50-100 μm, mobility：18 s/50g, sphericity >=96%, D50=66μm。
Preparation method is：Composition of raw material alloying matches, and vacuum melting steel ingot is then carried out, using Frequency Induction Heating Melted steel ingot, working chamber's vacuum 10-1-10-2Pa, using aerosolization method powder, dust gases argon pressure 1-4MPa, receives Sizing is carried out after obtaining powder.
Using the powder after screening, using laser melting and coating technique, different process of arranging in pairs or groups, H13 steel surfaces are repaired.
Die wear position is machined.
Mould surface to be repaired is wiped with acetone, removes surface grease.
Laser melting coating path planning programming is carried out according to die wear position geometry, formulates technological parameter.
Cladding reparation is carried out to die wear position using semiconductor laser cladding system, using above-mentioned technological parameter：Swash 1 ~ 2kw of luminous power, spot diameter 1mm, 5 ~ 8kg/h of powder feeding rate, 500 ~ 800mm/min of laser scan rate, overlapping rate 30% ~ 40%, individual layer cladding 1 ~ 2mm of thickness, laser melting coating head has argon gas defencive function, 15 ~ 30L/min of argon flow amount.
The mould after reparation is machined out using five-axle number control machine tool, returns to the original size of mould, it is final to obtain The good H13 mould steel of surface property.
The mass fraction of each element is as shown in comparative example 1 in table 1 in target product.The performance parameter of the comparative example 1 such as institute of table 2 Show.Surface property is as shown in table 3 after Comparison study example 1 carries out laser melting coating reparation to H13 steel.
Comparative example 2
The mass fraction of its each element is：0.33%C, 0.4%Si, 0.65%Mn, 2.5%Cr, 1.0%Mo, 0.25%V, P≤ 0.030%, S≤0.030%, 0.8%B, surplus are Fe and inevitable impurity.
The metal dust particle diameter is：50-100 μm, mobility：21 s/50g, sphericity >=92%, D50=65μm。
Preparation method is：Composition of raw material alloying matches, and vacuum melting steel ingot is then carried out, using Frequency Induction Heating Melted steel ingot, working chamber's vacuum 10-1-10-2Pa, using aerosolization method powder, dust gases argon pressure 1-4MPa, receives Sizing is carried out after obtaining powder.
Using the powder after screening, using laser melting and coating technique, different process of arranging in pairs or groups, H13 steel surfaces are repaired.
Die wear position is machined.
Mould surface to be repaired is wiped with acetone, removes surface grease.
Laser melting coating path planning programming is carried out according to die wear position geometry, formulates technological parameter.
Cladding reparation is carried out to die wear position using semiconductor laser cladding system, using above-mentioned technological parameter：Swash 1 ~ 2kw of luminous power, spot diameter 1mm, 5 ~ 8kg/h of powder feeding rate, 500 ~ 800mm/min of laser scan rate, overlapping rate 30% ~ 40%, individual layer cladding 1 ~ 2mm of thickness, laser melting coating head has argon gas defencive function, 15 ~ 30L/min of argon flow amount.
The mould after reparation is machined out using five-axle number control machine tool, returns to the original size of mould, it is final to obtain The good H13 mould steel of surface property.
The mass fraction of each element is as shown in comparative example 2 in table 1 in target product.The performance parameter of the comparative example 2 such as institute of table 2 Show.Surface property is as shown in table 3 after Comparison study example 2 carries out laser melting coating reparation to H13 steel.

Claims (5)

1. a kind of laser melting coating metal dust for repairing H13 mould steel, the mass fraction of its each element are：0.35-0.50% C, 0.70-3.80%Si, 0.50-1.60%Mn, 2.70-4.00%Cr, 1.30-3.55%Mo, 0.30-1.55%V, 0<P≤ 0.030%, 0<S≤0.030%, 1.0-4.0%B, surplus are Fe and inevitable impurity；
The wherein mobility of the metal dust：15-25 s/50g.
2. metal dust according to claim 1, it is characterised in that：B is 2.5-3.5%.
3. metal dust according to claim 1, it is characterised in that：Si is 2.5-3.5%.
4. metal dust according to claim 1, it is characterised in that：Size distribution in：30-150μm.
5. the preparation method of the metal dust as described in claim any one of 1-4, it is characterised in that this method is：Raw material Composition alloyization matches, and vacuum melting steel ingot is then carried out, using Frequency Induction Heating melted steel ingot, working chamber's vacuum 10-1- 10-2Pa, using aerosolization method powder, dust gases argon pressure 1-4MPa, receives to carry out sizing after powder.
CN201610714902.0A 2016-08-25 2016-08-25 A kind of laser melting coating metal dust for repairing H13 mould steel Active CN107164756B (en)

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CN111270146A (en) * 2020-03-24 2020-06-12 华南理工大学 H13 die steel wear-resistant composite material and preparation method thereof
CN112404420B (en) * 2020-11-19 2022-01-04 中南大学 High-strength steel powder for 3D printing, preparation method thereof, 3D printing method and prepared high-strength steel
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