CN105936971A - Hot processing technology for automobile hub - Google Patents
Hot processing technology for automobile hub Download PDFInfo
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- CN105936971A CN105936971A CN201610277673.0A CN201610277673A CN105936971A CN 105936971 A CN105936971 A CN 105936971A CN 201610277673 A CN201610277673 A CN 201610277673A CN 105936971 A CN105936971 A CN 105936971A
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- Prior art keywords
- wheel hub
- hub
- sodium
- parts
- processing technique
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- 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
- C21D9/34—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tyres; for rims
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a hot processing technology for an automobile hub. The hot processing technology comprises the following steps that firstly, the formed hub is fed into a solid solution furnace to be heated to 450-550 DEG C in 35-45 minutes, and the temperature is kept for 90-135 minutes; secondly, the hub obtained through solution treatment in the first step is immersed into a 65-75 DEG C cooling medium to be quenched for 180-240 seconds; thirdly, the quenched hub is subjected to first-stage aging treatment and second-stage aging treatment sequentially, the temperature of first-stage aging treatment is 120-125 DEG C, the time of first-stage aging treatment is 75-90 minutes, the temperature of second-stage aging treatment is 175-185 DEG C, and the time of second-stage aging treatment is 120-135 minutes; and fourthly, the hub obtained through aging treatment in the third step is taken out to be subjected to natural cooling. According to the hot processing technology, inner stress of the hub can be reduced effectively, and the hardness, toughness, tensile strength, compressive strength and other properties are improved.
Description
Technical field
The present invention relates to automotive hub technical field, be specifically related to a kind of automotive hub heat processing technique.
Background technology
Automotive hub is the metal parts for supporting automobile tire, and it is the important component part of auto parts and components, and automotive hub can be divided into steel wheel hub and aluminium alloy wheel hub by material, owing to the quality of steel wheel hub is big, inertia resistance is big, and heat dispersion is poor, easily getting rusty, outward appearance is single；And the density of aluminium alloy wheel hub is little, thermal conductivity is high, and fashion is attractive in appearance；Therefore aluminium alloy wheel hub instead of the automotive hub that steel wheel hub becomes main.But the toughness of aluminium alloy wheel hub is low, internal stress big, in order to improve the mechanical performance of aluminium alloy automobile hub, need it is carried out heat treatment, reduce internal stress, improve intensity and toughness.
Summary of the invention
The invention aims to overcome drawbacks described above present in prior art, it is provided that a kind of automotive hub heat processing technique.
For solving the problems referred to above, the present invention proposes a kind of automotive hub heat processing technique, comprises the following steps:
Step one, the wheel hub of molding is sent into solid solution furnace in heat, in 35-45 minute, wheel hub is heated to 450-550 DEG C, and keeps 90-135 minute；
Step 2, the wheel hub after solution treatment in step one is immersed in the cooling medium of 65-75 DEG C quench the 180-240 second；
Step 3, to quenching after wheel hub carry out first order Ageing Treatment and second level Ageing Treatment successively, wherein first order aging temp 120-125 DEG C, first order aging time 75-90 minute, second level aging temp 175-185 DEG C, second level aging time 120-135 minute；
Step 4, by step 4 Ageing Treatment rear-wheel hub take out natural cooling.
In technique scheme, described cooling medium includes sodium chloride 12-18 part, Polymeric sodium metaphosphate. 3-5 part, petroleum sodium sulfonate 6-8 part, barium chloride 5-10 part, water 125-180 part.
In technique scheme, described cooling medium includes sodium chloride 14-16 part, Polymeric sodium metaphosphate. 3-5 part, petroleum sodium sulfonate 6-8 part, barium chloride 7-8 part, 2-phosphonobutane-1,2,4-tricarboxylic acids four sodium 3-5 parts, zinc chloride 8-12 part, water 135-150 part.
In technique scheme, between described step 2 and step 3, wheel hub is coated fire proofing material.
In technique scheme, described fire proofing material includes 115-135 part quartz sand, epoxy resin 4-8 part, zirconium oxide 3-5 part, sodium lignin sulfonate 6-9 part, barium sulfate 3-5 part.
In technique scheme, described fire proofing material includes 125-130 part quartz sand, epoxy resin 5-6 part, zirconium oxide 3-5 part, sodium lignin sulfonate 6-9 part, barium sulfate 3-5 part, magnesium oxide 45-55 part, calcium oxide 35-40 part.
Heat treatment method in the present invention, by after aluminium alloy wheel hub is carried out Quenching Treatment, carry out secondary time effect process under appropriate conditions, can effectively reduce the internal stress of wheel hub, improve the performances such as hardness, toughness, tensile strength and comprcssive strength, the hardening media good cooling results simultaneously used when quenching, it is possible to effectively reduce the quenching internal stress of wheel hub, reduces wheel hub deformation extent；It is coated with refractory material at hub surface after quenching, it is possible to ensure that the internal and external temperature of wheel hub is uniform, improve the toughness of wheel hub simultaneously.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail:
Embodiment 1
In the present invention, automotive hub heat processing technique comprises the following steps:
Step one, the wheel hub of molding is sent into solid solution furnace in heat, in 35 minutes, wheel hub is heated to 480 DEG C, and keeps 90 minutes；
Step 2, being immersed in the cooling medium of 70 DEG C by the wheel hub after solution treatment in step one and quench 220 seconds, cooling medium includes 16 parts of sodium chloride, Polymeric sodium metaphosphate. 5 parts, petroleum sodium sulfonate 6 parts, barium chloride 8 parts, 145 parts of water；
Step 3, to quenching after wheel hub carry out first order Ageing Treatment and second level Ageing Treatment, wherein first order aging temp 120 DEG C, first order aging time 90 minutes, second level aging temp 185 DEG C, second level aging time 120 minutes successively；
Step 4, by step 4 Ageing Treatment rear-wheel hub take out natural cooling.
Embodiment 2
In the present invention, automotive hub heat processing technique comprises the following steps:
Step one, the wheel hub of molding is sent into solid solution furnace in heat, in 45 minutes, wheel hub is heated to 535 DEG C, and keeps 110 minutes；
Step 2, the wheel hub after solution treatment in step one is immersed in the cooling medium of 65 DEG C quench 200 seconds, described cooling medium includes 15 parts of sodium chloride, Polymeric sodium metaphosphate. 5 parts, petroleum sodium sulfonate 6 parts, barium chloride 8 parts, 2-phosphonobutane-1,2,4-5 parts of tricarboxylic acids four sodium, zinc chloride 10 parts, 150 parts of water；Coating fire proofing material at hub surface subsequently, described fire proofing material includes 125 parts of quartz sands, epoxy resin 4 parts, zirconium oxide 5 parts, sodium lignin sulfonate 6 parts, 5 parts of barium sulfate.
Step 3, to quenching after wheel hub carry out first order Ageing Treatment and second level Ageing Treatment, wherein first order aging temp 125 DEG C, first order aging time 75 minutes, second level aging temp 185 DEG C, second level aging time 120 minutes successively；
Step 4, by step 4 Ageing Treatment rear-wheel hub take out natural cooling.
Embodiment 3
In the present invention, automotive hub heat processing technique comprises the following steps:
Step one, the wheel hub of molding is sent into solid solution furnace in heat, in 45 minutes, wheel hub is heated to 520 DEG C, and keeps 95 minutes；
Step 2, the wheel hub after solution treatment in step one is immersed in the cooling medium of 65 DEG C quench 180 seconds, described cooling medium includes 16 parts of sodium chloride, Polymeric sodium metaphosphate. 5 parts, petroleum sodium sulfonate 6 parts, barium chloride 8 parts, 2-phosphonobutane-1,2,4-4 parts of tricarboxylic acids four sodium, zinc chloride 12 parts, 150 parts of water；Coating fire proofing material at hub surface subsequently, described fire proofing material includes 130 parts of quartz sands, epoxy resin 6 parts, zirconium oxide 4 parts, sodium lignin sulfonate 8 parts, 5 parts of barium sulfate, magnesium oxide 45 parts, calcium oxide 40 parts；
Step 3, to quenching after wheel hub carry out first order Ageing Treatment and second level Ageing Treatment, wherein first order aging temp 125 DEG C, first order aging time 90 minutes, second level aging temp 180 DEG C, second level aging time 130 minutes successively；
Step 4, by step 4 Ageing Treatment rear-wheel hub take out natural cooling.
Embodiment 4
In the present invention, automotive hub heat processing technique comprises the following steps:
Step one, the wheel hub of molding is sent into solid solution furnace in heat, in 35 minutes, wheel hub is heated to 450 DEG C, and keeps 135 minutes；
Step 2, the wheel hub after solution treatment in step one is immersed in the cooling medium of 70 DEG C quench 200 seconds, described cooling medium includes 15 parts of sodium chloride, Polymeric sodium metaphosphate. 5 parts, petroleum sodium sulfonate 6 parts, barium chloride 8 parts, 2-phosphonobutane-1,2,4-3 parts of tricarboxylic acids four sodium, zinc chloride 8 parts, 140 parts of water；Coating fire proofing material at hub surface subsequently, described fire proofing material includes 125 parts of quartz sands, epoxy resin 5 parts, zirconium oxide 5 parts, sodium lignin sulfonate 8 parts, 3 parts of barium sulfate, magnesium oxide 55 parts, calcium oxide 35 parts；
Step 3, to quenching after wheel hub carry out first order Ageing Treatment and second level Ageing Treatment, wherein first order aging temp 125 DEG C, first order aging time 80 minutes, second level aging temp 180 DEG C, second level aging time 125 minutes successively；
Step 4, by step 4 Ageing Treatment rear-wheel hub take out natural cooling.
Wheel hub after heat treatment in above-described embodiment 1, embodiment 2, embodiment 3 and embodiment 4 is carried out the test of mechanical performance, as shown in the table:
| Tensile strength | Yield strength | Hardness | |
| Embodiment 1 | 318MPa | 219MPa | 88HB |
| Embodiment 2 | 335MPa | 222MPa | 92HB |
| Embodiment 3 | 328MPa | 215MPa | 91HB |
| Embodiment 4 | 342MPa | 226MPa | 89HB |
The heat treatment method of wheel hub in the present invention, the rigidity of metal, hardness, toughness and fatigue strength etc. are not only greatly improved, by the hardening media rationally selected, the quenching internal stress of wheel hub can be effectively improved, and coating refractory material can ensure that internal and external temperature is uniform before Ageing Treatment, improve toughness, remove internal stress further.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (6)
1. an automotive hub heat processing technique, it is characterised in that comprise the following steps:
Step one, the wheel hub of molding is sent into solid solution furnace in heat, in 35-45 minute, wheel hub is heated to 450-550 DEG C, and keeps 90-135 minute；
Step 2, the wheel hub after solution treatment in step one is immersed in the cooling medium of 65-75 DEG C quench the 180-240 second；
Step 3, to quenching after wheel hub carry out first order Ageing Treatment and second level Ageing Treatment successively, wherein first order aging temp 120-125 DEG C, first order aging time 75-90 minute, second level aging temp 175-185 DEG C, second level aging time 120-135 minute；
Step 4, by step 4 Ageing Treatment rear-wheel hub take out natural cooling.
Automotive hub heat processing technique the most according to claim 1, it is characterised in that: described cooling medium includes sodium chloride 12-18 part, Polymeric sodium metaphosphate. 3-5 part, petroleum sodium sulfonate 6-8 part, barium chloride 5-10 part, water 125-180 part.
Automotive hub heat processing technique the most according to claim 2, it is characterized in that: described cooling medium includes sodium chloride 14-16 part, Polymeric sodium metaphosphate. 3-5 part, petroleum sodium sulfonate 6-8 part, barium chloride 7-8 part, 2-phosphonobutane-1,2,4-tricarboxylic acids four sodium 3-5 parts, zinc chloride 8-12 part, water 135-150 part.
Automotive hub heat processing technique the most according to claim 3, it is characterised in that: between described step 2 and step 3, wheel hub is coated fire proofing material.
Automotive hub heat processing technique the most according to claim 4, it is characterised in that: described fire proofing material includes 115-135 part quartz sand, epoxy resin 4-8 part, zirconium oxide 3-5 part, sodium lignin sulfonate 6-9 part, barium sulfate 3-5 part.
Automotive hub heat processing technique the most according to claim 5, it is characterised in that: described fire proofing material includes 125-130 part quartz sand, epoxy resin 5-6 part, zirconium oxide 3-5 part, sodium lignin sulfonate 6-9 part, barium sulfate 3-5 part, magnesium oxide 45-55 part, calcium oxide 35-40 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610277673.0A CN105936971A (en) | 2016-04-30 | 2016-04-30 | Hot processing technology for automobile hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610277673.0A CN105936971A (en) | 2016-04-30 | 2016-04-30 | Hot processing technology for automobile hub |
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| Publication Number | Publication Date |
|---|---|
| CN105936971A true CN105936971A (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610277673.0A Pending CN105936971A (en) | 2016-04-30 | 2016-04-30 | Hot processing technology for automobile hub |
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| Country | Link |
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| CN (1) | CN105936971A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695011A (en) * | 2018-06-20 | 2019-04-30 | 蔚来汽车有限公司 | A kind of heat treatment method of aluminum alloy part |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996006199A1 (en) * | 1994-08-22 | 1996-02-29 | Hayes Wheels International, Inc. | Method for heat treating a metal component |
| CN100999779A (en) * | 2006-12-27 | 2007-07-18 | 戴卡轮毂制造有限公司 | A356 aluminium alloy hub heat treating tech. |
| CN101050512A (en) * | 2006-04-03 | 2007-10-10 | 郑州大学 | High effective heat treatment method for wheel hub founded at low pressure from high performance A356 alloy |
| CN102912265A (en) * | 2011-08-02 | 2013-02-06 | 大亚科技股份有限公司 | Aluminum alloy wheel heat treatment process |
| CN104593556A (en) * | 2015-01-10 | 2015-05-06 | 安徽东星汽车部件有限公司 | Aluminum alloy quenching medium and preparation method thereof |
| CN104694727A (en) * | 2015-03-30 | 2015-06-10 | 盛旺汽车零部件（昆山）有限公司 | Wheel hub heat treatment speed-up technology |
-
2016
- 2016-04-30 CN CN201610277673.0A patent/CN105936971A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996006199A1 (en) * | 1994-08-22 | 1996-02-29 | Hayes Wheels International, Inc. | Method for heat treating a metal component |
| CN101050512A (en) * | 2006-04-03 | 2007-10-10 | 郑州大学 | High effective heat treatment method for wheel hub founded at low pressure from high performance A356 alloy |
| CN100999779A (en) * | 2006-12-27 | 2007-07-18 | 戴卡轮毂制造有限公司 | A356 aluminium alloy hub heat treating tech. |
| CN102912265A (en) * | 2011-08-02 | 2013-02-06 | 大亚科技股份有限公司 | Aluminum alloy wheel heat treatment process |
| CN104593556A (en) * | 2015-01-10 | 2015-05-06 | 安徽东星汽车部件有限公司 | Aluminum alloy quenching medium and preparation method thereof |
| CN104694727A (en) * | 2015-03-30 | 2015-06-10 | 盛旺汽车零部件（昆山）有限公司 | Wheel hub heat treatment speed-up technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695011A (en) * | 2018-06-20 | 2019-04-30 | 蔚来汽车有限公司 | A kind of heat treatment method of aluminum alloy part |
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Application publication date: 20160914 |