CN111575634A - Surface hardening treatment process suitable for complex precision die - Google Patents
Surface hardening treatment process suitable for complex precision die Download PDFInfo
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- CN111575634A CN111575634A CN202010458599.9A CN202010458599A CN111575634A CN 111575634 A CN111575634 A CN 111575634A CN 202010458599 A CN202010458599 A CN 202010458599A CN 111575634 A CN111575634 A CN 111575634A
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Classifications
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
Abstract
The invention belongs to the technical field of die manufacturing, and particularly relates to a surface hardening treatment process suitable for a complex precision die. The invention provides a surface hardening treatment process suitable for a complex precision die, which mainly comprises the following steps: s1: pretreating the surface of the metal mold by using a solvent to remove dirt adhered to the surface of the metal mold; s2: preparing hardening layer powder; s3: placing the hardened layer powder in a plasma spraying machine, and spraying the hardened layer powder on the surface of a metal mold; s4: and ageing the hardening layer powder sprayed on the surface of the metal mold. The invention provides a surface hardening treatment process suitable for a complex precise die, which forms a hardened layer with high hardness, strong wear resistance and stable property on the surface of a metal die, obviously improves the wear resistance of the surface layer of the metal die on the premise of keeping the toughness of a metal die body, and prolongs the service life of the die.
Description
Technical Field
The invention belongs to the technical field of die manufacturing, and particularly relates to a surface hardening treatment process suitable for a complex precision die.
Background
The mold element has the name of 'industrial mother' and can be used for manufacturing various molding devices. Generally, the mold has a long manufacturing cycle, high cost, a complex profile shape, and high requirements for dimensional accuracy and surface quality. For blanking dies, the wear of the sharp corners due to friction during normal use is the main failure mode. The sharp corner abrasion process of the die can be divided into three stages of initial abrasion, normal abrasion and rapid abrasion. The normal use of the die is required to be controlled within the normal wear stage, and when the rapid wear occurs, the die is required to be repaired immediately. Therefore, the improvement of the wear resistance of the die has very important significance in prolonging the service life of the die, improving the product quality and reducing the production cost.
The die is usually made of metal materials, such as die steel, and the material selection of the die is relatively limited due to the limitations of structural strength and toughness of the die, processing difficulty of the die and the like, and the hardness is also very difficult to improve.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a surface hardening treatment process suitable for a complex precise die. The surface hardening treatment process suitable for the complex precise mould comprises the following steps:
s1: pretreating the surface of the metal mold by using a solvent to remove dirt adhered to the surface of the metal mold;
s2: preparing hardening layer powder;
s3: placing the hardened layer powder in a plasma spraying machine, and spraying the hardened layer powder on the surface of a metal mold;
s4: and ageing the hardening layer powder sprayed on the surface of the metal mold.
Further, in the case of the surface hardening treatment process for a complex precision mold, step S1 is: and (3) placing the mould in an ultrasonic cleaning machine, respectively using ethanol and acetone as solvents to carry out ultrasonic vibration cleaning, removing the mould after cleaning, and naturally drying.
Further, in the case of the surface hardening treatment process applicable to the complex precision mold, the hardened layer powder in step S2 includes the following components:
alumina: 30-40 parts of
Silicon nitride: 30-35 parts of
Vanadium carbide: 10-15 parts of
Cubic boron nitride: 10-15 parts of
Tungsten carbide: 20-30 parts of
Nickel powder: 15-25 parts of
Yttrium oxide: 10-20 parts of
Gadolinium oxide: 5-15 parts of
Magnesium oxide: 5-10 parts.
Further, in the case of the surface hardening treatment process for a complex precision mold, step S2 is: adding the raw materials of the hardened layer powder into a ball mill according to the formula amount and uniformly mixing; then adding glycerol accounting for 30% of the mass of the powder of the hardening layer and potassium persulfate accounting for 0.1% of the mass of the powder of the hardening layer, and uniformly mixing.
Preferably, in the surface hardening treatment process for complex precision molds, in step S3, the working voltage of the plasma spraying machine is 30-55V, the working current is 600-900A, the flow rate of the helium gas is 25-50L/min, and the flow rate of the hydrogen gas is 10-20L/min.
Further, in the case of the surface hardening treatment process for a complex precision mold, step S4 is: coating a layer of lubricating grease for the high-temperature mould on the surface of the metal mould after spraying, heating to 300-320 ℃, preserving the heat for 3 hours, and cooling to room temperature at the speed of 2 ℃/min.
Further, in the surface hardening treatment process suitable for the complex precision mold, the hardened layer powder in the step S2 further includes 2-3 parts of polycrystalline diamond.
Preferably, in the case of the surface hardening treatment process for a complex precision mold described above, the particle diameters of the components of the hardened layer powder in step S2 are all in the range of 5 to 15 μm.
Has the advantages that: the invention provides a surface hardening treatment process suitable for a complex precise die, which forms a hardened layer with high hardness, strong wear resistance and stable property on the surface of a metal die, obviously improves the wear resistance of the surface layer of the metal die on the premise of keeping the toughness of a metal die body, and prolongs the service life of the die.
Detailed Description
Example 1
A surface hardening treatment process suitable for complex precision dies takes 718S die steel as a base material and comprises the following steps:
s1: pretreating the surface of the metal mold by using a solvent to remove dirt adhered to the surface of the metal mold;
s2: preparing hardening layer powder;
s3: placing the hardened layer powder in a plasma spraying machine, and spraying the hardened layer powder on the surface of a metal mold;
s4: and ageing the hardening layer powder sprayed on the surface of the metal mold.
In this embodiment, step S1 is: and (3) placing the mould in an ultrasonic cleaning machine, respectively using ethanol and acetone as solvents to carry out ultrasonic vibration cleaning, removing the mould after cleaning, and naturally drying.
In this embodiment, the hardened layer powder in step S2 includes the following components:
alumina: 40 portions of
Silicon nitride: 30 portions of
Vanadium carbide: 10 portions of
Cubic boron nitride: 10 portions of
Tungsten carbide: 20 portions of
Nickel powder: 15 portions of
Yttrium oxide: 10 portions of
Gadolinium oxide: 5 portions of
Magnesium oxide: 5 parts of the raw materials.
In this embodiment, step S2 is: adding the raw materials of the hardened layer powder into a ball mill according to the formula amount and uniformly mixing; then adding glycerol accounting for 30% of the mass of the powder of the hardening layer and potassium persulfate accounting for 0.1% of the mass of the powder of the hardening layer, and uniformly mixing.
In this embodiment, the plasma spraying apparatus in step S3 has an operating voltage of 30V, an operating current of 900A, a helium gas flow rate of 25L/min, and a hydrogen gas flow rate of 20L/min.
In this embodiment, step S4 is: coating a layer of lubricating grease for high-temperature die on the surface of the metal die after spraying, heating to 300 ℃, preserving heat for 3 hours, and cooling to room temperature at the speed of 2 ℃/min.
In this example, the surface hardness after the treatment was HRC 65.
Example 2
A surface hardening treatment process suitable for complex precision dies takes 718S die steel as a base material and comprises the following steps:
s1: pretreating the surface of the metal mold by using a solvent to remove dirt adhered to the surface of the metal mold;
s2: preparing hardening layer powder;
s3: placing the hardened layer powder in a plasma spraying machine, and spraying the hardened layer powder on the surface of a metal mold;
s4: and ageing the hardening layer powder sprayed on the surface of the metal mold.
In this embodiment, step S1 is: and (3) placing the mould in an ultrasonic cleaning machine, respectively using ethanol and acetone as solvents to carry out ultrasonic vibration cleaning, removing the mould after cleaning, and naturally drying.
In this embodiment, the hardened layer powder in step S2 includes the following components:
alumina: 30 portions of
Silicon nitride: 35 portions of
Vanadium carbide: 15 portions of
Cubic boron nitride: 15 portions of
Tungsten carbide: 30 portions of
Nickel powder: 25 portions of
Yttrium oxide: 20 portions of
Gadolinium oxide: 15 portions of
Magnesium oxide: 10 parts.
In this embodiment, step S2 is: adding the raw materials of the hardened layer powder into a ball mill according to the formula amount and uniformly mixing; then adding glycerol accounting for 30% of the mass of the powder of the hardening layer and potassium persulfate accounting for 0.1% of the mass of the powder of the hardening layer, and uniformly mixing.
In this embodiment, the plasma spraying machine in step S3 has an operating voltage of 55V, an operating current of 600A, a helium gas flow rate of 50L/min, and a hydrogen gas flow rate of 10L/min.
In this embodiment, step S4 is: coating a layer of lubricating grease for high-temperature die on the surface of the metal die after spraying, heating to 320 ℃, preserving heat for 3 hours, and cooling to room temperature at the speed of 2 ℃/min.
In this embodiment, the particle diameters of the respective components of the hardened layer powder in step S2 are all within the range of 5 to 15 μm.
In this example, the surface hardness after the treatment was HRC 67.
Example 3
A surface hardening treatment process suitable for complex precision dies takes 718S die steel as a base material and comprises the following steps:
s1: pretreating the surface of the metal mold by using a solvent to remove dirt adhered to the surface of the metal mold;
s2: preparing hardening layer powder;
s3: placing the hardened layer powder in a plasma spraying machine, and spraying the hardened layer powder on the surface of a metal mold;
s4: and ageing the hardening layer powder sprayed on the surface of the metal mold.
In this embodiment, step S1 is: and (3) placing the mould in an ultrasonic cleaning machine, respectively using ethanol and acetone as solvents to carry out ultrasonic vibration cleaning, removing the mould after cleaning, and naturally drying.
In this embodiment, the hardened layer powder in step S2 includes the following components:
alumina: 35 portions of
Silicon nitride: 32 portions of
Vanadium carbide: 15 portions of
Cubic boron nitride: 12 portions of
Tungsten carbide: 28 portions of
Nickel powder: 15 portions of
Yttrium oxide: 12 portions of
Gadolinium oxide: 8 portions of
Magnesium oxide: 5 parts of the raw materials.
In this embodiment, step S2 is: adding the raw materials of the hardened layer powder into a ball mill according to the formula amount and uniformly mixing; then adding glycerol accounting for 30% of the mass of the powder of the hardening layer and potassium persulfate accounting for 0.1% of the mass of the powder of the hardening layer, and uniformly mixing.
In this embodiment, the plasma spraying apparatus in step S3 has an operating voltage of 45V, an operating current of 750A, a helium gas flow rate of 40L/min, and a hydrogen gas flow rate of 15L/min.
In this embodiment, step S4 is: coating a layer of lubricating grease for high-temperature die on the surface of the metal die after spraying, heating to 320 ℃, preserving heat for 3 hours, and cooling to room temperature at the speed of 2 ℃/min.
In this embodiment, the hardened layer powder in step S2 further includes 2 parts of polycrystalline diamond.
In this embodiment, the particle diameters of the respective components of the hardened layer powder in step S2 are all within the range of 5 to 15 μm.
In this example, the surface hardness after the treatment was HRC 69.
Example 4
A surface hardening treatment process suitable for complex and precise dies takes 2738 die steel as a base material and comprises the following steps:
s1: pretreating the surface of the metal mold by using a solvent to remove dirt adhered to the surface of the metal mold;
s2: preparing hardening layer powder;
s3: placing the hardened layer powder in a plasma spraying machine, and spraying the hardened layer powder on the surface of a metal mold;
s4: and ageing the hardening layer powder sprayed on the surface of the metal mold.
In this embodiment, step S1 is: and (3) placing the mould in an ultrasonic cleaning machine, respectively using ethanol and acetone as solvents to carry out ultrasonic vibration cleaning, removing the mould after cleaning, and naturally drying.
In this embodiment, the hardened layer powder in step S2 includes the following components:
alumina: 35 portions of
Silicon nitride: 32 portions of
Vanadium carbide: 12 portions of
Cubic boron nitride: 15 portions of
Tungsten carbide: 30 portions of
Nickel powder: 15 portions of
Yttrium oxide: 12 portions of
Gadolinium oxide: 8 portions of
Magnesium oxide: 5 parts of the raw materials.
In this embodiment, step S2 is: adding the raw materials of the hardened layer powder into a ball mill according to the formula amount and uniformly mixing; then adding glycerol accounting for 30% of the mass of the powder of the hardening layer and potassium persulfate accounting for 0.1% of the mass of the powder of the hardening layer, and uniformly mixing.
In this embodiment, the plasma spraying apparatus in step S3 has an operating voltage of 45V, an operating current of 750A, a helium gas flow rate of 35L/min, and a hydrogen gas flow rate of 15L/min.
In this embodiment, step S4 is: coating a layer of lubricating grease for high-temperature die on the surface of the metal die after spraying, heating to 320 ℃, preserving heat for 3 hours, and cooling to room temperature at the speed of 2 ℃/min.
In this embodiment, the hardened layer powder in step S2 further includes 3 parts of polycrystalline diamond.
In this embodiment, the particle diameters of the respective components of the hardened layer powder in step S2 are all within the range of 5 to 15 μm.
In this example, the surface hardness after the treatment was HRC 69.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (8)
1. A surface hardening treatment process suitable for a complex precision die is characterized by comprising the following steps: the method comprises the following steps:
s1: pretreating the surface of the metal mold by using a solvent to remove dirt adhered to the surface of the metal mold;
s2: preparing hardening layer powder;
s3: placing the hardened layer powder in a plasma spraying machine, and spraying the hardened layer powder on the surface of a metal mold;
s4: and ageing the hardening layer powder sprayed on the surface of the metal mold.
2. The surface hardening treatment process for complex precision molds according to claim 1, wherein: step S1 is: and (3) placing the mould in an ultrasonic cleaning machine, respectively using ethanol and acetone as solvents to carry out ultrasonic vibration cleaning, removing the mould after cleaning, and naturally drying.
3. The surface hardening treatment process for complex precision molds according to claim 1, wherein: the hardened layer powder in step S2 includes the following components:
alumina: 30-40 parts of
Silicon nitride: 30-35 parts of
Vanadium carbide: 10-15 parts of
Cubic boron nitride: 10-15 parts of
Tungsten carbide: 20-30 parts of
Nickel powder: 15-25 parts of
Yttrium oxide: 10-20 parts of
Gadolinium oxide: 5-15 parts of
Magnesium oxide: 5-10 parts.
4. The surface hardening treatment process for complex precision molds according to claim 3, wherein: step S2 is: adding the raw materials of the hardened layer powder into a ball mill according to the formula amount and uniformly mixing; then adding glycerol accounting for 30% of the mass of the powder of the hardening layer and potassium persulfate accounting for 0.1% of the mass of the powder of the hardening layer, and uniformly mixing.
5. The surface hardening treatment process for complex precision molds according to claim 1, wherein: in step S3, the working voltage of the plasma spraying machine is 30-55V, the working current is 600-900A, the flow rate of helium gas is 25-50L/min, and the flow rate of hydrogen gas is 10-20L/min.
6. The surface hardening treatment process for complex precision molds according to claim 1, wherein: step S4 is: coating a layer of lubricating grease for the high-temperature mould on the surface of the metal mould after spraying, heating to 300-320 ℃, preserving the heat for 3 hours, and cooling to room temperature at the speed of 2 ℃/min.
7. The surface hardening treatment process for a complex precision mold as set forth in any one of claims 3 to 6, wherein: the hardened layer powder in the step S2 further comprises 2-3 parts of polycrystalline diamond.
8. The case hardening process for complex precision molds according to claim 7, wherein: the particle diameters of the respective components of the hardened layer powder in step S2 are all within the range of 5 to 15 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010458599.9A CN111575634A (en) | 2020-05-27 | 2020-05-27 | Surface hardening treatment process suitable for complex precision die |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010458599.9A CN111575634A (en) | 2020-05-27 | 2020-05-27 | Surface hardening treatment process suitable for complex precision die |
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| CN111575634A true CN111575634A (en) | 2020-08-25 |
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| CN202010458599.9A Pending CN111575634A (en) | 2020-05-27 | 2020-05-27 | Surface hardening treatment process suitable for complex precision die |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63169371A (en) * | 1986-12-29 | 1988-07-13 | Toyota Motor Corp | Formation of thermal spraying ceramic layer |
| TW200616529A (en) * | 2004-11-12 | 2006-05-16 | Univ Nat Tsing Hua | Heat-dissipating fin with nano-scale diamond structure |
| CN107250420A (en) * | 2015-02-27 | 2017-10-13 | 日立造船株式会社 | Sprayed on material and its manufacture method, spraying method and sprayed product |
| CN107904545A (en) * | 2017-11-18 | 2018-04-13 | 张晓娟 | A kind of metal die surface duplex hardening treatment process |
| CN109706420A (en) * | 2019-01-16 | 2019-05-03 | 冷银智造(深圳)有限公司 | A kind of metal die surface duplex hardening treatment process |
-
2020
- 2020-05-27 CN CN202010458599.9A patent/CN111575634A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63169371A (en) * | 1986-12-29 | 1988-07-13 | Toyota Motor Corp | Formation of thermal spraying ceramic layer |
| TW200616529A (en) * | 2004-11-12 | 2006-05-16 | Univ Nat Tsing Hua | Heat-dissipating fin with nano-scale diamond structure |
| CN107250420A (en) * | 2015-02-27 | 2017-10-13 | 日立造船株式会社 | Sprayed on material and its manufacture method, spraying method and sprayed product |
| CN107904545A (en) * | 2017-11-18 | 2018-04-13 | 张晓娟 | A kind of metal die surface duplex hardening treatment process |
| CN109706420A (en) * | 2019-01-16 | 2019-05-03 | 冷银智造(深圳)有限公司 | A kind of metal die surface duplex hardening treatment process |
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Application publication date: 20200825 |