CN105296715B - A kind of heat treatment method for lifting Casting Roller set uniformity of hardness - Google Patents
A kind of heat treatment method for lifting Casting Roller set uniformity of hardness Download PDFInfo
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- CN105296715B CN105296715B CN201510684772.6A CN201510684772A CN105296715B CN 105296715 B CN105296715 B CN 105296715B CN 201510684772 A CN201510684772 A CN 201510684772A CN 105296715 B CN105296715 B CN 105296715B
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Abstract
The invention discloses a kind of heat treatment method for lifting Casting Roller set uniformity of hardness, belong to machine components technical field of heat treatment, heat treatment method is including Casting Roller set is preheated, quenching and tempering processing, the preheating and quenching of Casting Roller set are heated by induction coil induction mode, and adjust the cool time according to the thickness of Casting Roller set；Hanging device supports fixed Casting Roller set, including lifting body and the supporter for being distributed in lifting body surrounding from inside, and lifting body is provided with the suspension hook for hooking steel wire rope.The heating that the present invention is heat-treated using induction coil, the difference for the Casting Roller set case hardness maxima and minima produced are less than 15HB, and heat treatment energy consumption reduces by more than 20% compared with integrally being heated in stove.
Description
Technical field
The invention belongs to machine components technical field of heat treatment, and in particular to a kind of Casting Roller that lifted covers uniformity of hardness
Heat treatment method.
Background technology
Casting Roller set makes aluminium liquid form aluminium sheet in a short time by cooling down and rolling double action, and an aluminium sheet part is made
For the raw material of cold rolling aluminium foil, another part uses directly as finished product, no matter any purposes, the height of board surface quality all determines
Determine the value of product, and the uniformity of roller set hardness is an important factor in order of quality, increasing producer
All pursuing the roller set of high rigidity uniformity.Requirement of the purposes difference that producer covers according to roller on Vehicles Collected from Market to uniformity of hardness
In 20~40HB, but as the fast development of aluminium production in recent years, the quality of aluminium sheet quality increasingly attract attention, individually
Producer is proposed to wish by roller set uniformity of hardness control within 15HB.
The technique for determining roller set uniformity of hardness is Technology for Heating Processing, and what current Casting Roller set used is mostly the tune of batch-type furnace
Matter+tempering process, the production model of the technique are that roller set is put into stove integrally to heat, when one section is incubated more than hardening heat
Between laggard water-filling quench or oil quenching, then in tempering furnace inside holding.But according to this technique productions after, using Brinell hardness tester measuring roll
Set uniformity of hardness is poor, and the difference of maxima and minima is 30HB or so, and part lengthy product is even up to 40HB；
Other above-mentioned quenched mode is produced in batch-type furnace, and 40~60 tons of heating furnace can typically fill 4~6, every
Substance at 1~2 ton, shove charge rate is about 20%, is had a long way to go with the 70%~80% of solid product, directly affects overall life
Produce cost, through measuring and calculating, such Casting Roller set heat treatment average unit cost be up to 3700 yuan it is per ton.
The content of the invention
The technical problem to be solved in the invention is to provide a kind of heat treatment method for lifting Casting Roller set uniformity of hardness,
The difference that Casting Roller is covered to maximum hardness and minimum value is reduced to 15 below HB, while reduces the energy consumption of heat treatment；There is provided simultaneously
A kind of lifting device being used for used in the heat treatment method that carries out of the present invention, roller is set to be enclosed on vertical fixed during heat treatment and not shadow
Ring the sensing heating of induction coil.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
It is a kind of to lift the heat treatment method of Casting Roller set uniformity of hardness, including Casting Roller set preheated, quench and
Temper, it is characterised in that：The preheating and quenching of Casting Roller set are heated by induction coil induction mode, and according to casting
The thickness adjustment cool time of roll sheath.
Technical solution of the present invention further improvement is that：Casting Roller covers Cr3 materials, and its progress impewdance matching temperature is
900~940 DEG C, coil is 100~150mm/min with respect to the translational speed of Casting Roller set axial direction.
Technical solution of the present invention further improvement is that：It is 700~750 DEG C that Casting Roller set, which carries out sensing preheating temperature,
Coil is 80~120mm/min with respect to the translational speed of Casting Roller set axial direction.
Technical solution of the present invention further improvement is that：The heat time of the impewdance matching of Casting Roller set is per 10mm rollers
The wall thickness heating 2min of set.
Technical solution of the present invention further improvement is that：Casting Roller is enclosed in tempering furnace by thermocouple direct measurement roller
Set（5）Temperature, control temperature be 568~572 DEG C, soaking time 10h.
Technical solution of the present invention further improvement is that：During Casting Roller set heat treatment, inside is covered from roller with lifting device
Roller set is supported, roller is covered vertical lifting.
Technical solution of the present invention further improvement is that：The lifting device includes the annulus that external diameter is less than roller set internal diameter
Shape lifts body, and four suspension hooks are symmetrically welded on internal support is lifted, and four groups of supporters, institute are uniformly distributed at lifting body edge
It is threaded cylindrical-shaped structure to state supporter, and from inside to outside through lifting body by coordinating adjustment branch with lifting the screw thread of body
The outwardly length scale of support body.
By adopting the above-described technical solution, the technological progress that the present invention obtains is：
The present invention uses the heating that induction coil is heat-treated, and the Casting Roller set uniformity of hardness produced is high, at heat
Manage the difference that the Casting Roller that energy consumption is small, and the heat treatment method with integrally being heated in traditional burner is produced covers maximum hardness and minimum value
Compared in more than 30HB, its uniformity of hardness is controlled within 15 HB, and is heat-treated energy consumption reduction by more than 20%；
The present invention select suitable coil translational speed according to the thickness of workpiece, guarantee depth of penetration heating and surface temperature it is equal
Even property, in order to carry out induction heat treatment, suitable lifting device is made, the lifting device using the present invention can implemented
Casting Roller set is set to keep vertical fixed during the heat treatment method of the present invention.
Brief description of the drawings
Equipment schematic perspective view when Fig. 1 is present invention heat treatment；
Fig. 2 is lifting device overlooking the structure diagram in the present invention.
Wherein：1st, body is lifted, 2, supporter, 3, suspension hook, 4, lifting device, 5, roller set, 6, induction coil.
Embodiment
As shown in figure 1, when the Casting Roller set 5 to Cr3 materials is heat-treated, roller set 5 is supported from inside with lifting device 4
Come and be suspended vertically roller set 5, induction coil 6 is enclosed on into 5 outer surfaces of roller set is heat-treated, at the induction heat that roller set 5 is carried out
Science and engineering skill includes preheating and quenching technical, and in preheating, preheating temperature is 700~750 DEG C, and the translational speed of induction coil 6 is 80
~120mm/min, when being quenched, hardening heat is 900~940 DEG C, and the translational speed of induction coil 6 is 100~150mm/
Min, while the time of Quench heating is according to the wall thickness progress reasonable selection of roller set 5, the specific wall thickness heating per 10mm rollers set 5
The 2min times, by the temperature of thermocouple direct measurement roller set 5 when being tempered in tempering furnace, it is 568 to control roller to cover 5 temperature
~572 DEG C, soaking time 10h, by thermocouple be connected directly between roller set 5 on measurement temperature relative to prior art measurement stove
The mode of interior air themperature being capable of more precise control roller 5 temperature of set.
As shown in Fig. 2 lifting device 4 includes lifting body 1, suspension hook 3 and supporter 2, the lifting body 1 is circular ring
Its external diameter is less than roller and covers 5 internal diameters, lifts the external diameter of body 1 and is to be able to enter roller set inside less than roller 5 internal diameters of set, and is arranged to justify
Cyclic structure can be more convenient more firm roller set 5, and the suspension hook 3 is four and is symmetrically welded the support being fixed in lifting body 1
On, the supporter 2 is four groups and is evenly distributed on lifting body 1 edge.
The supporter 2 is threaded cylindrical-shaped structure, and passes through lifting body 1 from inside to outside at lifting body 1 edge,
Supporter 2 makes branch of the supporter 2 from inner homogeneous by coordinating the outwardly length scale of adjustment with lifting the screw thread of body 1
Support roller set 5.
As shown in Figure 1 and Figure 2, it is that external diameter is less than the circular ring that roller covers 5 internal diameters to lift body 1, and the supporter 2 is uniform
The annulus surrounding of lifting body 1 and adjustable outwardly is arranged in, the suspension hook 3 is symmetrically fixed on inside the lifting annulus of body 1；Branch
It is in order to which support roller set connects so as to complete roller set with the fixed of lifting device that support body 2 is adjusted circumferentially outer protrusion the four of lifting body 1
Connect, it is to not influence the support of the two pairs of rollers of lifting device 4 set 5 and make steel wire rope that suspension hook 3, which is fixed in the support inside lifting body 1,
Do not contacted when hanging on suspension hook 3 with roller set.
As shown in Fig. 2 supporter 2 is arranged to four groups of bolts, the lifting surrounding of body 1 is uniformly distributed four cooperation supporters
Through the screwed hole of lifting body 1, supporter 2 is adjusted by elasticity bolt from inside to outside for the screwed hole of 2 bolts, the supporter 2
Outwardly length scale, it is in order to which its threaded connection with lifting body 1 can conveniently adjust it that supporter 2, which is arranged to bolt,
Bracing force, supporter 2 are arranged to four groups of support roller that can be more firm sets 5.
As shown in Fig. 2 suspension hook 3 is cylindrical boss, quantity is four, and being arranged to simple cylindrical boss can either expire
Foot lifting needs, and makes processing more simple and convenient again, and it is in order that lifting is more firm to be arranged to four.
The present invention is described in further details with reference to embodiment：
Embodiment 1
Induction heat treatment is carried out to the Cr3 Casting Rollers set that thickness is 150mm：
A, preheating is carried out on induction heating equipment, and preheating temperature sets 700 DEG C, and coil translational speed is 80mm/min；
B, impewdance matching heating-up temperature sets 900 DEG C, and the heat time is set as 30min, and coil translational speed is 100mm/
min；
C, tempering is carried out in tempering furnace, and it is 568 DEG C to control roller sleeving temperature, is incubated 10h.
After above-mentioned processing, with four buses of hardometer measure roller set, the surface for measuring the roller set of the present embodiment is hard
Spend for 403~417HB, while energy consumption reduces 31.6% compared with the heat treatment method integrally heated in traditional burner.
Embodiment 2
Induction heat treatment is carried out to the Cr3 materials Casting Roller set that thickness is 200mm：
A, preheating is carried out on induction heating equipment, and preheating temperature sets 725 DEG C, and coil translational speed is 100mm/min；
B, impewdance matching heating-up temperature sets 925 DEG C, and the heat time is set as 40min, and coil translational speed is 125mm/
min；
C, tempering is carried out in tempering furnace, and it is 570 DEG C to control roller sleeving temperature, is incubated 10h.
After above-mentioned processing, with four buses of hardometer measure roller set, the surface for measuring the roller set of the present embodiment is hard
Spend for 412~416HB, while energy consumption reduces 26% compared with the heat treatment method integrally heated in traditional burner.
Embodiment 3
Induction heat treatment is carried out to the Cr3 materials Casting Roller set that thickness is 250mm：
A, preheating is carried out on induction heating equipment, and preheating temperature sets 750 DEG C, and coil translational speed is 120mm/min；
B, impewdance matching heating-up temperature sets 940 DEG C, and the heat time is set as 50min, and coil translational speed is 150mm/
min；
C, tempering is carried out in tempering furnace, and it is 572 DEG C to control roller sleeving temperature, is incubated 10h.
After above-mentioned processing, with four buses of hardometer measure roller set, the surface for measuring the roller set of the present embodiment is hard
Spend for 408~415HB, while energy consumption reduces 23.5% compared with the heat treatment method integrally heated in traditional burner.
Technology for Heating Processing of the invention can ensure case hardness uniformity by general technology compared with prior art
30HB is controlled within 15HB, and heat treatment energy consumption reduces by more than 20%；The present invention can implemented using the lifting device of the present invention
Heat treatment method when Casting Roller set is kept vertical fixed.
Claims (2)
1. the heat treatment method of Casting Roller set uniformity of hardness is lifted a kind of, including Casting Roller set is preheated, quenched and returned
Fire processing, it is characterised in that：The preheating and quenching of Casting Roller set are all to pass through induction coil（6）Induction mode heats, and foundation
The thickness adjustment cool time of Casting Roller set；
Casting Roller set is Cr3 materials, and it is 900~940 DEG C that it, which carries out impewdance matching temperature, shifting of the coil with respect to Casting Roller set axial direction
Dynamic speed is 100~150mm/min；It is 700~750 DEG C that Casting Roller set, which carries out sensing preheating temperature, and coil is with respect to Casting Roller set
The translational speed of axial direction is 80~120mm/min；
The heat time of the impewdance matching of Casting Roller set is to heat 2min per the wall thickness of 10mm rollers set；
During Casting Roller set heat treatment, lifting device is used（4）From roller set（5）Inside supports roller set（5）, make roller set（5）It is vertical to rise
Hang；
The lifting device（4）It is less than roller set including external diameter（5）The circular lifting body of internal diameter（1）, in lifting body（1）Interior branch
Four suspension hooks are symmetrically welded in support（3）, in lifting body（1）Edge is uniformly distributed four groups of supporters（2）, the supporter（2）For
Threaded cylindrical-shaped structure, and from inside to outside through lifting body（1）By with lifting body（1）Screw thread coordinate adjustment supporter
（2）Outwardly length scale.
A kind of 2. heat treatment method for lifting Casting Roller set uniformity of hardness according to claim 1, it is characterised in that：Casting
Roll sheath passes through thermocouple direct measurement roller set in tempering furnace（5）Temperature, control temperature be 568~572 DEG C, insulation
Time 10h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510684772.6A CN105296715B (en) | 2015-10-22 | 2015-10-22 | A kind of heat treatment method for lifting Casting Roller set uniformity of hardness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510684772.6A CN105296715B (en) | 2015-10-22 | 2015-10-22 | A kind of heat treatment method for lifting Casting Roller set uniformity of hardness |
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| Publication Number | Publication Date |
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| CN105296715A CN105296715A (en) | 2016-02-03 |
| CN105296715B true CN105296715B (en) | 2018-01-02 |
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| CN113215383A (en) * | 2021-04-15 | 2021-08-06 | 无锡市捷安轧辊制造有限公司 | Heat treatment method for improving hardness and uniformity of casting roller sleeve |
Citations (5)
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|---|---|---|---|---|
| CN102828012A (en) * | 2011-06-15 | 2012-12-19 | 大连冶金轴承股份有限公司 | Large-scale dimension-adjustable bearing heat treatment tool |
| CN103343474A (en) * | 2013-06-25 | 2013-10-09 | 宝钢轧辊科技有限责任公司 | Calendaring roller shell and manufacturing method thereof |
| CN203284431U (en) * | 2013-05-20 | 2013-11-13 | 山东墨龙石油机械股份有限公司 | Sleeve and pipe parts heat treatment tool |
| CN104357621A (en) * | 2014-10-22 | 2015-02-18 | 广州市机电工业研究所 | Process method for grain refinement by induction quenching |
| CN104561505A (en) * | 2014-12-30 | 2015-04-29 | 中钢集团邢台机械轧辊有限公司 | Large-size roller sheath surface induction quenching method |
-
2015
- 2015-10-22 CN CN201510684772.6A patent/CN105296715B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828012A (en) * | 2011-06-15 | 2012-12-19 | 大连冶金轴承股份有限公司 | Large-scale dimension-adjustable bearing heat treatment tool |
| CN203284431U (en) * | 2013-05-20 | 2013-11-13 | 山东墨龙石油机械股份有限公司 | Sleeve and pipe parts heat treatment tool |
| CN103343474A (en) * | 2013-06-25 | 2013-10-09 | 宝钢轧辊科技有限责任公司 | Calendaring roller shell and manufacturing method thereof |
| CN104357621A (en) * | 2014-10-22 | 2015-02-18 | 广州市机电工业研究所 | Process method for grain refinement by induction quenching |
| CN104561505A (en) * | 2014-12-30 | 2015-04-29 | 中钢集团邢台机械轧辊有限公司 | Large-size roller sheath surface induction quenching method |
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