CN107586922A - The online immediate quenching technique of U71MnU75V rolling steel balls - Google Patents
The online immediate quenching technique of U71MnU75V rolling steel balls Download PDFInfo
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- CN107586922A CN107586922A CN201710861872.0A CN201710861872A CN107586922A CN 107586922 A CN107586922 A CN 107586922A CN 201710861872 A CN201710861872 A CN 201710861872A CN 107586922 A CN107586922 A CN 107586922A
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Abstract
The invention discloses a kind of online immediate quenching technique of U71MnU75V rolling steel balls, particularly a kind of online immediate quenching technique of U71MnU75V rolling steel balls for being related to steel ball production field.The online immediate quenching technique of U71MnU75V rolling steel balls of the present invention, including following steps：A, steel are heated；B, by the steel rolling after heating into steel ball；C, precooling treatment is carried out to the steel ball rolled；D, steel ball is quenched after the completion of precooling treatment；E, to the carry out waste heat self tempering after the completion of quenching.The ingenious waste heat using the steel ball rolled of the application is quenched, and need not carry out heating to steel ball in Quenching Treatment has saved the time, reduces energy consumption.After the completion of quenching, directly temper is carried out using the waste heat of steel ball, it is not necessary to steel ball is heated again, technological process is greatlyd save, reduces energy consumption, save production cost.Steel ball is heat-treated online using this technique, the comprehensive mechanical performance of steel ball can be improved.
Description
Technical field
The present invention relates to a kind of online immediate quenching technique of U71MnU75V rolling steel balls, particularly one kind to be related to steel ball life
The online immediate quenching technique of U71MnU75V rolling steel balls in production field.
Background technology
Steel ball is a kind of product in steel and iron manufacturing field.Steel ball manufacture in the prior art mainly uses two ways：Casting
And forging.Wherein steel ball casting process is extremely cumbersome, includes moulding, mould assembling, smelting, cast, the demoulding, polishing, heat treatment etc.
Multiple links, and need modeling.The link power consumption such as smelting, cast is high so that steel ball casting process long flow path, production
Efficiency is low, high energy consumption, the overall production cost raised, and its product quality stability is also poor.Steel ball forging includes, blanking,
Heating, is forged, the link such as heat treatment, although the technological process of steel ball forging is simple with respect to the technological process of steel ball casting,
That the link energy consumption therein that forges is higher, and forge to operation level requirement it is higher, forge the time length, its low production efficiency, its
Homogeneity of product is poor, and quality can not ensure.It is that traditional steel ball is manufactured and rolling steel ball is a kind of brand-new steel ball production technology
A kind of breakthrough of technique.Rolling mill practice has the advantages of energy consumption is low, production efficiency is high, stock utilization is high, environmental pollution is low.Newly
Rolling steel ball technique also need to a kind of new Technology for Heating Processing to improve rolling steel ball comprehensive mechanical performance, so as to further carrying
For the quality of steel ball product.
The content of the invention
The invention provides a kind of easy to operation, steel ball comprehensive mechanical performance can be significantly improved, improves product quality,
It is high to improve product quality controllability, greatly shortens technological process, improves production efficiency, significantly reduces production cost
The online immediate quenching technique of U71MnU75V rolling steel balls.
The present invention is the online immediate quenching technique of used U71MnU75V rolling steel balls that solves the above problems, including with
Under several steps：
A, steel are heated；
B, by the steel rolling after heating into steel ball；
C, precooling treatment is carried out to the steel ball rolled；
D, steel ball is quenched after the completion of precooling treatment；
E, waste heat self tempering is carried out to the steel ball after the completion of quenching.
It is further that steel ball is placed on adjustable speed drag conveyor in step C and carries out precooling treatment, in D steps
Middle steel ball is placed in adjustable speed water-cooled screw conveyor is quenched.
It is further that steel ball is placed on progress waste heat self tempering in cool-bag in E steps axle.
It is further to proceed by and quench when the temperature of steel ball surface is in 650 DEG C~680 DEG C of scopes in precooling treatment
Fire, and steel ball quenching leaving water temperature is in the range of 120 DEG C~130 DEG C.
It is further that the waste heat self tempering time is 24 hours.
The beneficial effects of the invention are as follows：The ingenious waste heat using the steel ball rolled of the application is quenched, at quenching
Heating need not be carried out to steel ball during reason and save the time, reduce energy consumption.After the completion of quenching, the waste heat of steel ball is directly utilized
Carry out temper, it is not necessary to steel ball is heated again, technological process is greatlyd save, reduces energy consumption, save life
Produce cost.Steel ball is heat-treated online using this technique, can reach the purpose for the comprehensive mechanical performance for improving steel ball.
Embodiment
The online immediate quenching technique of U71MnU75V rolling steel balls of the application, including following steps：
A, steel are heated；
B, by the steel rolling after heating into steel ball；
C, precooling treatment is carried out to the steel ball rolled；
D, steel ball is quenched after the completion of precooling treatment；
E, to the carry out waste heat self tempering after the completion of quenching.
The application, into directly precooling treatment is carried out to steel ball after steel ball, makes steel ball surface temperature in the steel rolling after by heat
Reach the initial temperature of quenching, then steel ball is quenched, temper directly is carried out to steel ball again after the completion of quenching.By
Steel ball surface hardness after Quenching Treatment is improved, and the steel ball toughness after tempering is further strengthened.
The ingenious waste heat using the steel ball rolled of the application is quenched, and steel ball need not be carried out in Quenching Treatment
The time has been saved in heating, reduces energy consumption.After the completion of quenching, directly temper is carried out using the waste heat of steel ball, it is not necessary to
Steel ball is heated again, the time of saving, reduces energy consumption.
Therefore the mechanical performance of steel ball had both been improved using the technique of the application, production efficiency has been improved, has reduced energy
Consumption, reduces production cost.
Steel ball is placed on adjustable speed drag conveyor in step C and carries out precooling treatment, places steel ball in D steps
Quenched in adjustable speed water-cooled screw conveyor.Steel ball is placed on adjustable speed drag conveyor in precooling treatment,
Steel ball is set to complete precooling treatment in course of conveying.In hardening phase, steel ball is placed in adjustable speed water-cooled screw conveyor,
Steel ball is completed Quenching Treatment in course of conveying, the heat treatment process and the operation of rolling above of steel ball are made using such scheme
Orderly linking and continuous line of production technology before and after formation so that the steel ball rolled can be heat-treated in time, after allowing
Continuous heat treatment profit can use the waste heat of previous process link, realize the online preheating quenching of steel ball.Realize rolling for steel ball
The links such as system, precooling, quenching can not be connected.And precooling treatment and Quenching Treatment are just completed while conveying, makes life
Production efficiency is greatly improved greatly.In addition the conveying by adjusting water-cooled screw conveyor and adjustable speed drag conveyor is fast
Degree can accurately controls precooling treatment and the temperature of quenching cooling velocity, and its is easy to operate, and control accuracy is high, makes steel ball
The performance of product is significantly improved.
Steel ball is placed on progress waste heat self tempering in cool-bag in E steps axle.Cool-bag can use heat-preserving container
Or insulation bucket, waste heat self tempering is carried out in cool-bag can avoid external environmental interference, raising steel ball tempering effect.
Quenching is proceeded by when the temperature of steel ball surface is in 650 DEG C~680 DEG C of scopes in precooling treatment, and steel ball is quenched
Fiery leaving water temperature is in the range of 120 DEG C~130 DEG C.Hardening heat control can improve quenching effect in aforementioned range, make steel
Ball surface hardness reaches product quality requirement.
The waste heat self tempering time is 24 hours.Tempering time is controlled in aforementioned range, can significantly improve rushing for steel ball
Hit toughness.
Claims (5)
- The online immediate quenching technique of 1.U71MnU75V rolling steel balls, it is characterised in that：Including following steps：A, steel are heated；B, by the steel rolling after heating into steel ball；C, precooling treatment is carried out to the steel ball rolled；D, steel ball is quenched after the completion of precooling treatment；E, waste heat self tempering is carried out to the steel ball after the completion of quenching.
- 2. the online immediate quenching technique of U71MnU75V rolling steel balls as claimed in claim 1, it is characterised in that：Will in step C Steel ball, which is placed on adjustable speed drag conveyor, carries out precooling treatment, and steel ball is placed on into adjustable speed water-cooling spiral in D steps Quenched in conveyer.
- 3. the online immediate quenching technique of U71MnU75V rolling steel balls as claimed in claim 1, it is characterised in that：In E step axles Steel ball is placed on progress waste heat self tempering in cool-bag.
- 4. the online immediate quenching technique of U71MnU75V rolling steel balls as claimed in claim 1, it is characterised in that：At precooling Quenching is proceeded by reason when the temperature of steel ball surface is in 650 DEG C~680 DEG C of scopes, and steel ball quenching leaving water temperature is 120 DEG C~130 DEG C in the range of.
- 5. the described online immediate quenching technique of U71MnU75V rolling steel balls as claimed in claim 1, it is characterised in that：It is remaining The hot self tempering time is 24 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710861872.0A CN107586922A (en) | 2017-09-21 | 2017-09-21 | The online immediate quenching technique of U71MnU75V rolling steel balls |
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| CN201710861872.0A CN107586922A (en) | 2017-09-21 | 2017-09-21 | The online immediate quenching technique of U71MnU75V rolling steel balls |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2778650C1 (en) * | 2022-01-17 | 2022-08-22 | Акционерное общество "ЕВРАЗ Нижнетагильский металлургический комбинат"(АО "ЕВРАЗ НТМК") | Method for manufacturing grinding balls from steel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104240A (en) * | 1985-04-14 | 1986-10-15 | 邯郸钢铁总厂 | Rolled steel balls for ball grinders using residual heat thermal treatment process and equipment |
| CN1152623A (en) * | 1996-09-23 | 1997-06-25 | 魁永生 | High carbon low alloy steel miniature abrasive ball and making method |
| CN101381848A (en) * | 2008-10-23 | 2009-03-11 | 常熟市龙腾特种钢有限公司 | Method of preparing wearable steel ball |
| CN102382954A (en) * | 2011-11-02 | 2012-03-21 | 北京科技大学 | On-line continuous quenching device for skew-rolled ball-milled steel balls |
| CN105385831A (en) * | 2015-12-17 | 2016-03-09 | 北京科技大学 | Afterheat utilization and thermal treatment device for obliquely-rolled ball-milled steel ball |
| CN106077414A (en) * | 2016-05-24 | 2016-11-09 | 江阴市华正金属科技有限公司 | A kind of small dimension steel ball production technology |
-
2017
- 2017-09-21 CN CN201710861872.0A patent/CN107586922A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104240A (en) * | 1985-04-14 | 1986-10-15 | 邯郸钢铁总厂 | Rolled steel balls for ball grinders using residual heat thermal treatment process and equipment |
| CN1152623A (en) * | 1996-09-23 | 1997-06-25 | 魁永生 | High carbon low alloy steel miniature abrasive ball and making method |
| CN101381848A (en) * | 2008-10-23 | 2009-03-11 | 常熟市龙腾特种钢有限公司 | Method of preparing wearable steel ball |
| CN102382954A (en) * | 2011-11-02 | 2012-03-21 | 北京科技大学 | On-line continuous quenching device for skew-rolled ball-milled steel balls |
| CN105385831A (en) * | 2015-12-17 | 2016-03-09 | 北京科技大学 | Afterheat utilization and thermal treatment device for obliquely-rolled ball-milled steel ball |
| CN106077414A (en) * | 2016-05-24 | 2016-11-09 | 江阴市华正金属科技有限公司 | A kind of small dimension steel ball production technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2778650C1 (en) * | 2022-01-17 | 2022-08-22 | Акционерное общество "ЕВРАЗ Нижнетагильский металлургический комбинат"(АО "ЕВРАЗ НТМК") | Method for manufacturing grinding balls from steel |
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Application publication date: 20180116 |
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