CN105671260A - Non-oil type quenching medium heat treatment method - Google Patents
Non-oil type quenching medium heat treatment method Download PDFInfo
- Publication number
- CN105671260A CN105671260A CN201610059685.6A CN201610059685A CN105671260A CN 105671260 A CN105671260 A CN 105671260A CN 201610059685 A CN201610059685 A CN 201610059685A CN 105671260 A CN105671260 A CN 105671260A
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- CN
- China
- Prior art keywords
- quenching
- cast grinding
- quenchant
- cylpebs
- oil
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Classifications
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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
- 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
-
- 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
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a non-oil type quenching medium heat treatment method. Firstly, water-soluble alkene high-molecular polymer water solution with the concentration ranging from 10% to 25% is prepared in a quenching bath; secondly, cast grinding balls and cast grinding cylpebs are heated in a heating furnace; thirdly, when being heated to the quenching temperature ranging from 900 DEG C to 1,150 DEG C, the grinding balls and the grinding cylpebs are dipped into the water-soluble quenching solution in the quenching bath; and fourthly, when the surface temperature of the cast grinding balls and the cast grinding cylpebs are lowered to 250 DEG C-350 DEG C, the cast grinding balls and the cast grinding cylpebs are taken away from the quenching bath. By the adoption of the non-oil type quenching medium, multiple defects of an oil type quenching medium are overcome, no smoke is generated during production, the environment and the human health are protected, the hardness and the surface finish of the obtained products are both better than those of the products generated through oil quenching, the product performance is more stable, the products are clean and free of oil stains, and contamination to the next working procedure process is avoided.
Description
Technical field
The present invention relates to wear resistance castings technical field of heat treatment, it is specially a kind of non-oils quenchant heat treating method.
Background technology
Different quenchant affects and quenches each stage, and the speed of cooling in each stage of quenching affects every performance of foundry goods. When tradition is quenchant taking water, cooling power is extremely responsive to water temperature change, and water temperature raises, and the temperature making maximum shrinkage corresponding turns to low temperature; In the steam film stage, shrinkage is lower, and high temperature transformation easily occurs formula body difficult to understand; And water is at steam film stage not easily broken bubble, make cast(ing) surface quenching hardness uneven or produce soft spots; The cooling rate in circulation heat stage and martensitic transformation district is too big, foundry goods gross distortion is easily made even to ftracture. For the deficiency of shrend medium, people start to add various inorganic salt, alkali or its mixture in water, form various different inorganic aqueous solution. Although inorganic aqueous solution improves the speed of cooling of foundry goods in high-temperature zone, improve cooling uniformity, higher hardness is obtained after foundry goods is quenched, reducing hardening break and distortion, but brine quenching easily gets rusty, alkali class solution quenching simultaneously is wayward, easily burn operator, salt made from earth containing a comparatively high percentage of sodium chloride class is stainless, but easily produces obnoxious flavour, the health of infringement situ production workman.
Along with the continuous appearance of various casting material, traditional quenchant does not adapt to the flourish of industry far away, 20 the beginning of the century people bring into use mineral oil as quenchant, it is low that mineral oil has viscosity, oxidation-resistance and Heat stability is good, the advantages such as long service life, it can be used in, and hardening capacity is good, the thick wall of foundry goods is little, complex-shaped, the foundry goods that requires quenching strain little. Along with the development of heat treatment technics, various quenching oil (such as fast quenching oil, bright quenc hing oil, vacuum quenching oil, isothermal, hierarchical quenching oil etc.) have also been obtained development rapidly and applies widely, more external advanced countries and China have defined complete quenching oil series product all, production have also been obtained and apply widely.
But quenching oil has many limitation, the cost height of quenching oil, greasy dirt are many, quenching process easily produces dense smoke even also can initiation fire, mineral oil biodegradability is poor in addition, and the mineral oil discarded is very big to the pollution potential threat of environment.In addition, the many tensio-active agents added for improving quenching performance also all increase the difficulty of liquid waste disposal. Although the superior mineral oil of the degradation property of vegetables oil, but vegetable and animals oils contains more unsaturated fatty acids, can produce the material of the smells with irritating such as carboxylic acid, aldehyde, ketone because of hydrolysis, oxidation etc., and it is rotten easily to become sour, and is polluted by environment.
It thus is seen that oils quenchant has started to be satisfied with the large-scale production of foundry goods, find novel quenchant, imperative.
Summary of the invention
It is an object of the invention to provide a kind of non-oils quenchant heat treating method, to solve in above-mentioned background technology the problem proposed.
For achieving the above object, the present invention provides following technical scheme: a kind of non-oils quenchant heat treating method,
1), in quenching pond, compound concentration is the water soluble alkene family macromolecule aqueous solutions of polymers of 10-25%;
2), cast grinding ball, mill section are heated in process furnace;
3), when abrading-ball, mill section be heated to quenching temperature 900 ~ 1150 DEG C, in the water-soluble quenching liquid in dip quench pond;
4), when the surface temperature of cast grinding ball, mill section is down to 250 ~ 350 DEG C, quenching pond is left.
Preferably, in step 1), the temperature of described hardening liquid controls between 10 ~ 90 DEG C.
Preferably, in step 3), the cool time is 5 ~ 10 minutes.
Preferably, in step 3), quench from coming out of the stove to during quenching and should control within the scope of 1～2 minute interval time, and product full and uniform to be spread out in quenching cradle.
Compared with prior art, the invention has the beneficial effects as follows: utilize this non-oils quenchant to overcome the multiple shortcoming of oils quenchant existence. Can not producing oil smoke in production process, protect environmental and human health impacts, effective when the hardness of products obtained therefrom, surface smoothness are all quenched than oil, product performance are more stable, and product is clean, without oil stain, can not next one operation process be polluted.
Embodiment
The present invention provides a kind of technical scheme: a kind of non-oils quenchant heat treating method,
1), in quenching pond, compound concentration is the water soluble alkene family macromolecule aqueous solutions of polymers of 10-25%;
2), cast grinding ball, mill section are heated in process furnace;
3), when abrading-ball, mill section be heated to quenching temperature 900 ~ 1150 DEG C, in the water-soluble quenching liquid in dip quench pond;
4), when the surface temperature of cast grinding ball, mill section is down to 250 ~ 350 DEG C, quenching pond is left.
Concrete use-pattern: compound concentration is the water soluble alkene family macromolecule aqueous solutions of polymers of 10-25% in quenching pond, the temperature of hardening liquid controls between 10 ~ 90 DEG C, cast grinding ball, mill section are heated to quenching temperature 900 ~ 1150 DEG C in process furnace, in the water-soluble quenching liquid in dip quench pond, the cool time is 5 ~ 10 minutes. When the surface temperature of cast grinding ball, mill section is down to 250 ~ 350 DEG C, leaves quenching pond, namely complete quench treatment.
Although this specification sheets is described according to enforcement mode, but not each enforcement mode only comprises an independent technical scheme, this kind of narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, technical scheme in each embodiment through appropriately combined, can also form other enforcement modes that it will be appreciated by those skilled in the art that.
Claims (4)
1. a non-oils quenchant heat treating method, it is characterised in that,
1), in quenching pond, compound concentration is the water soluble alkene family macromolecule aqueous solutions of polymers of 10-25%;
2), cast grinding ball, mill section are heated in process furnace;
3), when abrading-ball, mill section be heated to quenching temperature 900 ~ 1150 DEG C, in the water-soluble quenching liquid in dip quench pond;
4), when the surface temperature of cast grinding ball, mill section is down to 250 ~ 350 DEG C, quenching pond is left.
2. the non-oils quenchant heat treating method of one according to claim 1, it is characterised in that: in step 1), the temperature of described hardening liquid controls between 10 ~ 90 DEG C.
3. the non-oils quenchant heat treating method of one according to claim 1, it is characterised in that: in step 3), the cool time is 5 ~ 10 minutes.
4. the non-oils quenchant heat treating method of one according to claim 1, it is characterised in that: in step 3), quench from coming out of the stove to during quenching and should control within the scope of 1～2 minute interval time, and product full and uniform to be spread out in quenching cradle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059685.6A CN105671260A (en) | 2016-01-29 | 2016-01-29 | Non-oil type quenching medium heat treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059685.6A CN105671260A (en) | 2016-01-29 | 2016-01-29 | Non-oil type quenching medium heat treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105671260A true CN105671260A (en) | 2016-06-15 |
Family
ID=56304298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610059685.6A Pending CN105671260A (en) | 2016-01-29 | 2016-01-29 | Non-oil type quenching medium heat treatment method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105671260A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168792A (en) * | 2007-11-27 | 2008-04-30 | 宁国市东方碾磨材料有限责任公司 | Applying method of temperature section timing oil quenching in wear-resisting material heat treatment |
| CN101638756A (en) * | 2008-08-21 | 2010-02-03 | 安徽省凤形耐磨材料股份有限公司 | Production process method of high-carbon multi-element alloy casting grinding ball |
| CN101705435A (en) * | 2008-04-23 | 2010-05-12 | 安徽省凤形耐磨材料股份有限公司 | Production method of ultrahard high-chromium cast grinding ball |
| CN102140572A (en) * | 2011-03-21 | 2011-08-03 | 安徽省凤形耐磨材料股份有限公司 | Non-fuel medium quenching process for casting grinding ball and casting grinding section |
-
2016
- 2016-01-29 CN CN201610059685.6A patent/CN105671260A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168792A (en) * | 2007-11-27 | 2008-04-30 | 宁国市东方碾磨材料有限责任公司 | Applying method of temperature section timing oil quenching in wear-resisting material heat treatment |
| CN101705435A (en) * | 2008-04-23 | 2010-05-12 | 安徽省凤形耐磨材料股份有限公司 | Production method of ultrahard high-chromium cast grinding ball |
| CN101638756A (en) * | 2008-08-21 | 2010-02-03 | 安徽省凤形耐磨材料股份有限公司 | Production process method of high-carbon multi-element alloy casting grinding ball |
| CN102140572A (en) * | 2011-03-21 | 2011-08-03 | 安徽省凤形耐磨材料股份有限公司 | Non-fuel medium quenching process for casting grinding ball and casting grinding section |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160615 |
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| RJ01 | Rejection of invention patent application after publication |