CN105132651A - Anti-carburizing painting capable of being removed through washing after quenching and preparation method thereof - Google Patents
Anti-carburizing painting capable of being removed through washing after quenching and preparation method thereof Download PDFInfo
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- CN105132651A CN105132651A CN201510588211.6A CN201510588211A CN105132651A CN 105132651 A CN105132651 A CN 105132651A CN 201510588211 A CN201510588211 A CN 201510588211A CN 105132651 A CN105132651 A CN 105132651A
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- carburizing
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Abstract
The invention discloses an anti-carburizing painting capable of being removed through washing after quenching. The anti-carburizing painting is prepared from, by mass, 25%-35% of boric acid, 15%-25% of filling, 15%-25% of aluminum dihydrogen phosphate, 1%-5% of tinting pigment and 30%-40% of water. The invention further discloses a preparation method of the anti-carburizing painting capable of being removed through washing after quenching. The anti-carburizing painting can be removed through washing after carburizing heat treatment, so that the problem that a traditional anti-carburizing painting is difficult to peel off after the carburizing heat treatment is solved. An inorganic heat-resisting material serves as an anti-carburizing agent in the formula of the anti-carburizing painting, so that an anti-carburizing coating formed after the anti-carburizing agent is brushed on the surface of a workpiece is good in cohesiveness, capable of not peeling and capable of not flowing at a high temperature, and the carburizing atmosphere is not influenced.
Description
Technical field
The present invention relates to a kind of masking paste, the masking paste of removal can be washed after particularly relating to a kind of quenching, the preparation method removing masking paste after the invention still further relates to above-mentioned quenching, can be washed.
Background technology
The components of machine such as gear generally need to carry out carburizing treatment to its working face or thrust surface after machining, then carry out quenching or other thermal treatments, to improve its mechanical property, chemical property and processing characteristics.In order to the surface allowing subsequent handling carry out secondary processing does not produce crisp rigid and damage process tool, need to carry out anti-carburizi ng process when carburizing to workpiece surface local.The anti-carburizi ng method of steel-iron components mainly contains mechanical processing method, copper-plating method and masking paste method.Mechanical processing method is the process redundancy by improving workpiece, is removed by cementation zone after carburizing and thermal treatment by modes such as machining.This method not only wastes material, also add operation, and the cost of charp tool also increases, and is replaced by copper-plating method and masking paste method gradually.Copper-plating method is the most traditional anti-seepage method, and antiseepage quality is high.But the method belongs to chemical process, cost is high, the cycle is long, and plating solution serious environment pollution.Masking paste method is before carrying out carburizing treatment, does not need surface-coated one coating of antiseepage to protect, again by coating removal after carburizing and thermal treatment at workpiece.General masking paste mainly with silicate, glass powder for filmogen, this kind of coating is difficult to peel off after carburizing and thermal treatment, needs to be removed by ball blast or sandblasting, adds production cost, extend the production cycle.In addition for complex construction workpiece, the masking paste of its inside workpiece brushing is extremely difficult to be removed by ball blast or sandblasting.
Chinese patent CN1184831A discloses a kind of method of first brushing one deck scavenger layer before workpiece brushing masking paste, and by this technique, the coating of workpiece surface can be peeled off voluntarily after workpiece heat.But this technique can cause the coating of workpiece surface just to come off in cementation process, thus causes leakage to be oozed, and reduces anti-seepage effect.Chinese patent CN101074455A discloses water self-stripping protective cover, and this coating can be peeled off voluntarily by washing.But the water-base resin as this coating main component belongs to the organism of non-refractory, can decompose in cementation process, interference carburizing atmosphere, thus affect carburizing quality.Therefore non-scale during a kind of high temperature, do not trickle, do not affect carburizing atmosphere, and the exploitation of the masking paste can removed by washing after carburizing thermal treatment is necessary.
Summary of the invention
Goal of the invention: technical problem to be solved by this invention can wash the masking paste of removal after being to provide a kind of quenching, this masking paste is good to the sticking power of iron and steel parts, fast from dry speed, and brushing can ensure when workpiece surface himself when high temperature non-scale, do not trickle, do not affect carburizing atmosphere, and can also be removed by washing after carburizing thermal treatment.
Can wash the preparation method removing masking paste after the technical problem that the present invention also will solve is to provide above-mentioned quenching, this preparation technology is simple, and energy consumption is low, cost is low.
Summary of the invention: for solving the problems of the technologies described above, the technical solution adopted in the present invention is:
The masking paste of removal can be washed after quenching, formulated by the component 25%-35% boric acid of following mass percent, 15%-25% filler, 15%-25% aluminium dihydrogen phosphate, 1%-5% tinting pigment and 30%-40% water.
Further preferably, described filler is any two kinds or any three kinds mixing in any proportion in lithium bentonite, kaolin or titanium dioxide.
Further preferably, described tinting pigment is any one in zinc-chrome yellow, chrome yellow or four alkali zinc yellows.
The preparation method removing masking paste can be washed after above-mentioned quenching, possess and comprise following operation steps:
Step 1, adds in agitator by the water of aequum and aluminium dihydrogen phosphate while stirring, is stirred to mixture and becomes transparent liquid;
Step 2, adds boric acid and the filler of aequum in the agitator of step 1, is under 60 revs/min, material stirring is even in stir speed (S.S.);
Step 3, adds the tinting pigment of aequum in the agitator of step 2, under stir speed (S.S.) is 60 revs/min by material stirring evenly.
The masking paste basic technical indicator that the present invention can wash removal is as follows:
Outward appearance---paste substance;
Viscosity (20 DEG C)---7000-90000mPas;
Be suitable for antiseepage temperature---800-1000 DEG C;
Be suitable for the antiseepage degree of depth---≤6mm.
Of the present inventionly wash removal masking paste, steel part can be met under 800-1000 DEG C of condition, antiseepage requirement during infiltration layer≤6mm, and possess the function can washed and come off.Because the boric acid in formula can generate the melting boron trioxide rete of stable performance more than 400 DEG C at workpiece surface, workpiece surface is played a protective role, boron trioxide is soluble in water simultaneously, therefore namely remove by washing after carburizing, masking paste of the present invention selects boric acid as anti-carburizer; In the filler component of formula, lithium bentonite has thixotropy, can by coating thickening, and give the excellent suspension stability of coating and be coated with performance, kaolin fusing point about 1780 DEG C, suspension and good dispersity in water, have stronger acid resistance, titanium dioxide stable chemical nature, high temperature resistant, give the excellent compactness of coating and spalling; Aluminium dihydrogen phosphate in formula has very strong adhesive property, can ensure the sticking power of coating at surface of steel workpiece, and makes anti-carburization coating meet water with regard to efflorescence, thus can wash removal after carburizing; And the tinting pigment (zinc-chrome yellow, chrome yellow or four alkali zinc yellows) in formula is used to indicate the cement protection scope of workpiece surface.
Beneficial effect: masking paste of the present invention can be removed by washing after carburizing thermal treatment, thus solve traditional masking paste be difficult to after carburizing thermal treatment peel off problem, use inorganic refractory materials as anti-carburizer in masking paste formula of the present invention, the anti-carburization coating cohesiveness that anti-carburizer brushing of the present invention is formed after workpiece surface is good, and when high temperature non-scale, do not trickle, do not affect carburizing atmosphere.
Accompanying drawing explanation
Fig. 1 is the metallographic structure figure on its surface after workpiece painting brushes the masking paste of embodiment 1;
Fig. 2 is the hardness gradient figure at workpiece anti-carburizi ng position after workpiece painting brushes the masking paste of embodiment 1.
Embodiment
According to following embodiment, the present invention may be better understood.But those skilled in the art will readily understand, the content described by embodiment only for illustration of the present invention, and should can not limit the present invention described in detail in claims yet.
Embodiment 1:
The masking paste of removal can be washed after quenching, by mass percent be 26% boric acid, 3% lithium bentonite, 5% kaolin, 8% titanium dioxide, the aluminium dihydrogen phosphate of 25%, the zinc-chrome yellow of 1% and 32% water formulated.
The masking paste of embodiment 1 is used to carry out anti-carburizi ng process to the gear that material is 20CrNi2Mo, carburization process is 940 DEG C of heating 110h, carburized layer depth is 4.1-4.8mm, direct quenching after carburizing, after workpiece after quenching soaks 3h in 50 DEG C of water, the anti-carburization coating of workpiece surface peels off completely.After workpiece is coated with and brushes the masking paste of embodiment 1, its surface organizes as shown in Figure 1.Masking paste due to embodiment 1 has good anti-seepage effect, carbon atom can be effectively stoped to infiltrate workpiece surface, so workpiece surface does not produce cementation zone in carburizing atmosphere, then after Q-tempering, the metallographic structure of workpiece surface is the same with workpiece core is low carbon martensite.
As shown in Figure 2, workpiece core hardness is 46.8HRC to the hardness gradient at workpiece anti-carburizi ng position, and surface hardness is 47HRC, and from hardness gradient, masking paste reaches good anti-seepage effect.
Embodiment 2:
The masking paste of removal can be washed after quenching, by mass percent be 25% boric acid, 5% lithium bentonite, 10% titanium dioxide, the aluminium dihydrogen phosphate of 15%, the chrome yellow of 5% and 40% water formulated.
Embodiment 3:
The masking paste of removal can be washed after quenching, by mass percent be 35% boric acid, 3% lithium bentonite, 14% titanium dioxide, the aluminium dihydrogen phosphate of 16%, the four alkali zinc yellows of 2% and 30% water formulated.
Embodiment 4:
The masking paste of removal can be washed after quenching, by mass percent be 27% boric acid, 10% lithium bentonite, 10% kaolin, 5% titanium dioxide, the aluminium dihydrogen phosphate of 15%, the four alkali zinc yellows of 1% and 32% water formulated.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (4)
1. can wash the masking paste of removal after quenching, it is characterized in that: be formulated by the component 25%-35% boric acid of following mass percent, 15%-25% filler, 15%-25% aluminium dihydrogen phosphate, 1%-5% tinting pigment and 30%-40% water.
2. can wash the masking paste of removal after quenching according to claim 1, it is characterized in that: described filler is any two kinds or any three kinds mixing in any proportion in lithium bentonite, kaolin or titanium dioxide.
3. can wash the masking paste of removal after quenching according to claim 1, it is characterized in that: described tinting pigment is any one in zinc-chrome yellow, chrome yellow or four alkali zinc yellows.
4. can wash the preparation method removing masking paste after quenching described in claim 1, it is characterized in that possessing and comprise following operation steps:
Step 1, adds in agitator by the water of aequum and aluminium dihydrogen phosphate while stirring, is stirred to mixture and becomes transparent liquid;
Step 2, adds boric acid and the filler of aequum in the agitator of step 1, is under 60 revs/min, material stirring is even in stir speed (S.S.);
Step 3, adds the tinting pigment of aequum in the agitator of step 2, under stir speed (S.S.) is 60 revs/min by material stirring evenly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510588211.6A CN105132651A (en) | 2015-09-16 | 2015-09-16 | Anti-carburizing painting capable of being removed through washing after quenching and preparation method thereof |
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| CN201510588211.6A CN105132651A (en) | 2015-09-16 | 2015-09-16 | Anti-carburizing painting capable of being removed through washing after quenching and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521401A (en) * | 2016-11-11 | 2017-03-22 | 南京科润新材料技术有限公司 | Anti-carburizing paint special for finish machining parts and preparation method thereof |
| CN110184434A (en) * | 2019-05-30 | 2019-08-30 | 郑云超 | A kind of preparation method of the anti-decarburizing coating of dense form high temperature |
| CN115318578A (en) * | 2022-08-24 | 2022-11-11 | 广州丰东热炼有限公司 | Input shaft anti-seepage coating equipment and construction method thereof |
| CN116716575A (en) * | 2023-06-28 | 2023-09-08 | 苏州达舟精密机械有限公司 | Micro-carburization treatment method for improving mechanical property of nut |
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| CN101074455A (en) * | 2007-06-21 | 2007-11-21 | 上海交通大学 | Production of fast-drying water self-stripping metal heat treatment protecting coating |
| CN101265372A (en) * | 2008-04-26 | 2008-09-17 | 山西玺汇科技有限公司 | Stainless steel high temperature oxidation resistance paint and application thereof |
| CN101643614A (en) * | 2009-08-14 | 2010-02-10 | 机械科学研究总院先进制造技术研究中心 | High temperature oxidation resistant environment-friendly coating with functions of lubricating and heat conducting |
| CN101973769A (en) * | 2010-09-10 | 2011-02-16 | 马鞍山钢铁股份有限公司 | Carbon-containing temperature measurement tube oxidation-resistance coating as well as preparation method and using method thereof |
| CN103710504A (en) * | 2013-12-26 | 2014-04-09 | 常熟市美尔特金属制品有限公司 | Metal thermal treatment protection coating |
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2015
- 2015-09-16 CN CN201510588211.6A patent/CN105132651A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101074455A (en) * | 2007-06-21 | 2007-11-21 | 上海交通大学 | Production of fast-drying water self-stripping metal heat treatment protecting coating |
| CN101265372A (en) * | 2008-04-26 | 2008-09-17 | 山西玺汇科技有限公司 | Stainless steel high temperature oxidation resistance paint and application thereof |
| CN101643614A (en) * | 2009-08-14 | 2010-02-10 | 机械科学研究总院先进制造技术研究中心 | High temperature oxidation resistant environment-friendly coating with functions of lubricating and heat conducting |
| CN101973769A (en) * | 2010-09-10 | 2011-02-16 | 马鞍山钢铁股份有限公司 | Carbon-containing temperature measurement tube oxidation-resistance coating as well as preparation method and using method thereof |
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| 中国机械工程学会热处理学会: "《热处理手册第3卷热处理设备和工辅材料第4版》", 31 January 2008 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521401A (en) * | 2016-11-11 | 2017-03-22 | 南京科润新材料技术有限公司 | Anti-carburizing paint special for finish machining parts and preparation method thereof |
| CN110184434A (en) * | 2019-05-30 | 2019-08-30 | 郑云超 | A kind of preparation method of the anti-decarburizing coating of dense form high temperature |
| CN115318578A (en) * | 2022-08-24 | 2022-11-11 | 广州丰东热炼有限公司 | Input shaft anti-seepage coating equipment and construction method thereof |
| CN116716575A (en) * | 2023-06-28 | 2023-09-08 | 苏州达舟精密机械有限公司 | Micro-carburization treatment method for improving mechanical property of nut |
| CN116716575B (en) * | 2023-06-28 | 2024-01-16 | 苏州达舟精密机械有限公司 | Micro-carburization treatment method for improving mechanical property of nut |
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Application publication date: 20151209 |