CN103225726B - A kind of alloy hot rolling adhesive thermal insulating cotton and manufacture method thereof - Google Patents
A kind of alloy hot rolling adhesive thermal insulating cotton and manufacture method thereof Download PDFInfo
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- CN103225726B CN103225726B CN201310177558.2A CN201310177558A CN103225726B CN 103225726 B CN103225726 B CN 103225726B CN 201310177558 A CN201310177558 A CN 201310177558A CN 103225726 B CN103225726 B CN 103225726B
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Abstract
The invention discloses a kind of alloy hot rolling adhesive thermal insulating cotton and manufacture method thereof, first, the hole of the two Bond of pouring is covered with in the whole front of described adiabatic cotton, described hole inner bottom part is provided with friction matter, the mixture be made up of the glass powder that room temperature Bond and softening point are higher waters inlet hole hole after adding water and being mixed with into two Bond, the material of frictional force between strengthening workpiece and roll is embedded in adhesive thermal insulating cotton, as friction matter, frictional force between the heated parts of adhesive thermal insulating cotton and roll is cladded under remarkable strengthening high temperature, reasonable balance application is containing the contradiction of lubrication and friction during glass powder adiabatic cotton insulation hot rolling, make insulation hot rolling smooth.
Description
Technical field
The present invention relates to a kind of less-deformable alloy insulation hot rolling thermal insulating material, specifically a kind of alloy hot rolling adhesive thermal insulating cotton, its emphasis, as male sportsman insulation hot rolling thermal insulating material, also can be used as the thermal insulating material of difficult wrought titanium alloy and difficult distortion stainless steel insulation hot rolling.The invention still further relates to the manufacture method of above-mentioned thermal insulating material.
Background technique
Male sportsman is the crucial special metal material of modern high end power plant, and hot processing temperature Fan Wei Narrow is narrow, and resistance of deformation is large, must take fully effective Insulation during hot rolling to hot rolling base (workpiece).Another patent of invention of the present inventor, name is called adhesive thermal insulating cotton and preparation method thereof, the patent No. is ZL200510023801.0, which disclose a kind of adhesive thermal insulating cotton, open die forging is carried out on the alloy billet surface that can be pasted on rapidly in discontinuously arranged glass powder in this adhesive thermal insulating cotton under 900 ~ 1250 DEG C of high temperature, to the alloy workpiece of heating, there is good heat insulation effect, effectively breach the bottleneck of male sportsman open die forging.In above-mentioned adhesive thermal insulating cotton, glass powder is as the Bond of adiabatic cotton and heated parts, even if softening point is higher, lubricity is lower, heating-up temperature due to workpiece is significantly higher than the softening point in glass powder, glass powder is at high temperature made to be molten state, this adhesive thermal insulating cotton is pasted on refractory alloy workpiece (strip plate) surface when carrying out insulation hot rolling, due to the lubricating effect of glass powder in adhesive thermal insulating cotton, frictional force between workpiece and roll is significantly reduced, cause skidding between workpiece and roll, roll is in idling conditions, ring base is in zero deformation state in situ, insulation hot rolling cannot be carried out, related tests shows, therefore above-mentioned adhesive thermal insulating cotton can not be applied to less-deformable alloy and carries out insulation hot rolling.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of less-deformable alloy insulation hot rolling adhesive thermal insulating cotton, this adhesive thermal insulating cotton clads frictional force between the heated parts of adhesive thermal insulating cotton and roll under significantly strengthening high temperature, reasonable balance application, containing the contradiction of lubrication and friction during glass powder adiabatic cotton insulation hot rolling, makes insulation hot rolling smooth.
In order to solve the problems of the technologies described above, technological scheme of the present invention is:
A kind of alloy hot rolling adhesive thermal insulating cotton, described adiabatic cotton is rollable, it is a rectangular planes plate after expansion, the hole of the two Bond of pouring is covered with in the whole front of described adiabatic cotton rectangular planes plate, the spacing of adjacent holes is L=20 ~ 50mm, the diameter of described hole is 6 ~ 10mm, and the pass between the depth H 2 of described hole and the thickness H1 of described adiabatic cotton is: H2=(0.6 ~ 0.8) H1, and H1-H2 >=2mm; The two area sum S1 of Bond in described adiabatic cotton front and the proportionate relationship of adiabatic cotton front gross area S2 are S1:S2=0.55 ~ 0.80, the mixture that the described pair of Bond is made up of room temperature Bond and the higher glass powder of softening point, described hole inner bottom part is provided with the material of frictional force between strengthening workpiece and roll as friction matter.
Adiabatic cotton should select the refractory ceramic fibre material of high-quality, and compared with general adiabatic cotton, fiber should be longer, more not easily efflorescence, must not use the adiabatic cotton that mineral asbestos raw material (abbreviation asbestos) manufacture, and the Al that quality should be adopted good
2o
3and SiO
2deng raw material, the high-quality adiabatic cotton getting rid of silk after high melt, its quality requirement is low heat conductivity, low heat capacity, and more not easily efflorescence under DEG C high temperature of room temperature ~ 1300, still keeps better elasticity.
The effect of room temperature Bond is glass powder higher for softening point to stick in adiabatic cotton, and the higher glass powder of softening point, as high-temperature agglomerant, its role is to adiabatic cotton be adhered to the strip plate surface through high-temperature heating.
The material of frictional force between strengthening workpiece and roll is embedded in as friction matter in adhesive thermal insulating cotton, frictional force between the heated parts of adhesive thermal insulating cotton and roll is cladded under remarkable strengthening high temperature, reasonable balance application, containing the contradiction of lubrication and friction during glass powder adiabatic cotton insulation hot rolling, makes insulation hot rolling smooth.
As preferably, described friction matter is magnesia (i.e. magnesium oxide sand grains).
The boundary dimensions of magnesia is less than normal, is not enough to make to form enough frictional force between workpiece and roll, thus can not fully avoid skidding between workpiece and roll.Therefore, the size of magnesia should be enough large, but when the magnesia using boundary dimensions excessive, produce between roll and workpiece when our discovery can cause workpiece hot rolling and acutely shake, certain quality problems will be brought like this, therefore in order to avoid roll during workpiece hot rolling and producing between workpiece is acutely shaken, the boundary dimensions of magnesia is 1.5mm-4mm.
The magnesia quantity be placed in bottom hole is 2 to 6, magnesium oxide fusing point is up to 2800 DEG C, at 1250 DEG C, still there is quite high hardness, and the highest hot processing temperature of refractory alloy is not substantially higher than 1250 DEG C, so first-selected magnesium oxide sand grains (i.e. magnesia) is as the rubbing agent of less-deformable alloy hot rolling.
Each hole is considered as a point by the front of whole adiabatic cotton, and described hole is periodic distribution with square or face centered tetragonal lattice structure form, and each dot matrix all parallels with the length arrowhead of adiabatic cotton or width arrowhead.
The glass powder softening point temperature that described softening point is higher is 850 ~ 950 DEG C, and its main component is SiO
2, B
2o
3, Al
2o
3, CaO.If softening point temperature is on the low side, then viscosity is on the low side, and lubricity is higher, should not as high-temperature agglomerant.
Room temperature Bond can select natural plant cellulose or chemical cellulose, or is natural plant cellulose and chemical cellulose, uses aqueous solvent to be dissolved under room temperature; Natural plant cellulose can be starch; Chemical cellulose can be high-quality carboxymethyl cellulose.
The manufacture method of above-mentioned alloy hot rolling adhesive thermal insulating cotton comprises the following steps:
(1) curling adiabatic cotton is launched, open puncture hole in the front of adiabatic cotton plane, so that friction matter is placed in bottom hole and the two Bond of pouring; Maximum diameter 6 ~ the 10mm of hole, depth H 2 is less than the thickness H1 of adiabatic cotton, H2=(0.6 ~ 0.8) H1, H1-H2 >=2mm; Each hole is considered as a point, be covered with the hole in adiabatic cotton front, on the front of whole adiabatic cotton, hole is periodic distribution with square or face centered tetragonal lattice structure form, each dot matrix all parallels with the length arrowhead of adiabatic cotton or width arrowhead, the adjacent spacing L=20 ~ 50mm of the adjacent holes paralleled with length arrowhead or width arrowhead;
(2) friction matter is inserted bottom the hole of adhesive thermal insulating cotton;
(3) preparation of two Bond: by glass powder higher to room temperature Bond, softening point by (40 ~ 20): the part by weight Homogeneous phase mixing of (60 ~ 80), the glass powder mixture that room temperature Bond, softening point are higher, adds water and fully stirs into two Bond;
(4) two Bond is poured into adiabatic cotton front to have inserted in the hole of magnesia, after drying, should remain basically stable with the front of adiabatic cotton in the surface of two Bond, the two area sum S1 of Bond in adiabatic cotton front and the proportionate relationship of adiabatic cotton front gross area S2 are, S1:S2=0.55 ~ 0.80, and be the distribution of discontinuous point-like in the front of adiabatic cotton, should there is not film-form, plain film shape, strip in the shape of two Bonds in adiabatic cotton front.
In described step (2), described friction matter is magnesia.Each hole puts 2-6 magnesia, and the boundary dimensions of every magnesia is 1.5mm-4mm.
Two Bond is thick, and viscosity at room temperature 30 ~ 100P(feel viscosity is good, and P is viscosity unit); If desired, the step that two Bond is heated also is comprised in described step (3), two Bond is suitably heated, making " two Bond " a little more than having suitable mobility and enough viscosity under room temperature, guaranteeing that " two Bond " is at room temperature bonded in adiabatic cotton hole.
Compared with prior art, the present invention has following advantages:
1, the glass powder that in alloy hot rolling adhesive thermal insulating cotton, " two Bond " contains has higher softening point, and under high temperature, viscosity is high, firm and solid with the bonding of workpiece (strip plate), directly can be pasted onto the surface of heated parts, has good insulation effect to workpiece.Some magnesium oxide sand grains (magnesia) are placed in bottom hole, near the adiabatic cotton back side, the adiabatic cotton back side then contacts with the surface of roll, magnesia is as friction matter, frictional force between the heated parts of adhesive thermal insulating cotton and roll is cladded under remarkable strengthening high temperature, reasonable balance application is containing the contradiction of lubrication and friction during glass powder adiabatic cotton insulation hot rolling, the lubricity of glass binder and the contradiction of required frictional force in adiabatic cotton during active balance insulation hot rolling, breach the requirement that refractory alloy application adhesive thermal insulating cotton carries out being incubated higher frictional force needed for hot rolling, achieve the feasibility that a kind of special adhesive thermal insulating cotton of application carries out being incubated hot rolling, insulation hot rolling is smooth.
2, compared with rolling technology with traditional " corrosion resistant plate+adiabatic cotton " compound jacket heat preservation hot, do not exist due to stainless steel resistance of deformation far below refractory alloy resistance of deformation, cause the corrosion resistant plate that workpiece clads to roll the problem of thin rear formation wrinkle layer by layer, thus do not affect the operability that insulation hot rolling controls stocking size and dimension.
3, compared with rolling technology with traditional " corrosion resistant plate+adiabatic cotton " compound jacket heat preservation hot, a kind of front of alloy hot rolling adhesive thermal insulating cotton directly can be pasted onto the surface of hot rolling base, insulation for strip plate is coated, without the need to being fixed at the coated steel plate in the adiabatic cotton back side, simplify technique, save cost of production.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is a kind of Facad structure schematic diagram of alloy hot rolling adhesive thermal insulating cotton.
Fig. 2 is A-A generalized section of Fig. 1.
Embodiment
Alloy hot rolling adhesive thermal insulating cotton of the present invention as shown in Figure 1, 2, adiabatic cotton described in it selects market can supply high-quality refractory ceramic fibre material, compared with general adiabatic cotton, fiber should be longer, more not easily efflorescence, the adiabatic cotton that mineral asbestos raw material (abbreviation asbestos) manufacture must not be used, and the Al that quality should be adopted good
2o
3and SiO
2deng raw material, the high-quality adiabatic cotton getting rid of silk after high melt, its quality requirement is low heat conductivity, low heat capacity, and not easily efflorescence under 800 ~ 1300 DEG C of high temperature, still keeps better elasticity.
Adiabatic cotton that can be curling, be a rectangular surface plate after expansion, its length can be more than 10 times of width, such as, when width is 600mm, length then can more than 6000mm, and thickness H1 is generally 12mm to 15mm, is covered with the hole 1 of the two Bond of pouring in the whole front (corresponding with the back side) of adiabatic cotton rectangular planes plate, diameter is 6 ~ 10mm, depth H 2 is less than the thickness H1 of adiabatic cotton, H2=(0.6 ~ 0.8) H1, H1-H2 >=2mm; Each hole 1 is uniformly distributed in periodicity with square (or face centered tetragonal shape) lattice structure form, each dot matrix all parallels with the length arrowhead (or width arrowhead) of adiabatic cotton, the adjacent spacing L=20 ~ 50mm of the adjacent holes 1 paralleled with length arrowhead (or width arrowhead).
Friction matter 3(magnesia is placed with bottom above-mentioned hole 1), the then two Bond 2 of pouring hole 1 in, describedly twoly to bond, 2 mixtures be made up of room temperature Bond and the higher glass powder of softening point.
Above-mentioned alloy hot rolling adhesive thermal insulating cotton manufacture method:
(1) curling adiabatic cotton is launched, as shown in Figure 1, open puncture hole 1 in the front of adiabatic cotton plane, so that friction matter is placed in bottom hole 1 and the two Bond of pouring; Maximum diameter 6 ~ the 10mm of hole 1, depth H 2 is less than the thickness H1 of adiabatic cotton, H2=(0.6 ~ 0.8) H1, H1-H2 >=2mm; Each hole 1 is considered as a point, be covered with the hole 1 in adiabatic cotton front, on the front of whole adiabatic cotton, hole 1 is uniformly distributed in periodicity with square or face centered tetragonal lattice structure form, each dot matrix all parallels with the length arrowhead of adiabatic cotton or width arrowhead, the adjacent spacing L=20 ~ 50mm of the adjacent holes 1 paralleled with length arrowhead or width arrowhead.
(2) adopt magnesia as friction matter 3, as shown in Figure 2, bottom the hole 1 of magnesia being inserted adhesive thermal insulating cotton; Each hole puts 2-6 magnesia, and the boundary dimensions of every magnesia is 1.5mm-4mm.
(3) preparation of two Bond 2: by glass powder higher to room temperature Bond, softening point by (40 ~ 20): the part by weight Homogeneous phase mixing of (60 ~ 80), the glass powder mixture that room temperature Bond, softening point are higher adds water and fully stirs into two Bond; If desired, two Bond 2 is suitably heated, making two Bond 2 a little more than having suitable mobility and enough viscosity under room temperature, guaranteeing that two Bond 2 is at room temperature bonded in adiabatic cotton hole.
(4) two Bond 2 being poured into adiabatic cotton front has inserted in the hole 1 of magnesia, after drying, should remain basically stable with the front of adiabatic cotton in the surface of two Bond 2, the two area sum S1 of Bond in adiabatic cotton front and the proportionate relationship of adiabatic cotton front gross area S2 are, S1:S2=0.55 ~ 0.80, and be the distribution of discontinuous point-like in the front of adiabatic cotton, should there is not film-form, plain film shape, strip in the shape of two Bonds in adiabatic cotton front.
The application one of the alloy hot rolling adhesive thermal insulating cotton that said method obtains:
What certain looping mill carried out the heat preservation hot roll process of conventional hot rolling technology (namely not taking Insulation to the ring base workpiece surface of heating during hot rolling) and employing alloy hot rolling adhesive thermal insulating cotton of the present invention rolls ring comparative trial, rolling ring material is GH4145 refractory alloy, ring base workpiece size is (φ 1140/ φ 700) × 270mm, roll rear ring and be of a size of (φ 2020/ φ 1860) × 350mm, the heating-up temperature of workpiece is 1190 DEG C.
When adopting conventional hot rolling technology to roll ring, in course of hot rolling, rapidly, be once forced to the hot rolling technology taking three fire, every fiery amount of deformation is less than 30%, and inspection shows, Hot-rolled Rotary crystal grain comparatively thick (3 ~ 2 grades) in workpiece cooling; When adopting the heat preservation hot roll process hot rolling ring of alloy hot rolling adhesive thermal insulating cotton of the present invention, in course of hot rolling, workpiece cooling is slower, one fire can complete the hot rolling of ring, one intimately rolls amount of deformation more than 50%, inspection shows, Hot-rolled Rotary crystal grain comparatively tiny (about 5 grades), comprehensive mechanical property is good, fills the superiority with showing employing " a kind of alloy hot rolling adhesive thermal insulating cotton " and be incubated Hot-rolled Rotary technique.
The application two of the alloy hot rolling adhesive thermal insulating cotton that said method obtains:
Adopt the patent No. adhesive thermal insulating cotton and alloy hot rolling adhesive thermal insulating cotton of the present invention disclosed in ZL200510023801.0 respectively, rolling Nimonic80A alloy bar material on φ 500 milling train, strip plate is of a size of 130mm square billet, rolling rear bar size is φ 80mm bar, strip plate heating-up temperature be 1100 DEG C (usually by 1150 ~ 1160 DEG C of heating, easily cause rolling excellent local grain partially thick), application result shows: when disclosed in ZL200510023801.0, adhesive thermal insulating cotton is incubated hot rolling to the employing patent No., skid between strip plate and roll, roll is in idling conditions, strip plate is in zero deformation state in situ, insulation hot rolling cannot be carried out, when adopting alloy hot rolling adhesive thermal insulating cotton of the present invention insulation hot rolling, course of hot rolling is smooth and easy, finishing temperature reaches 980 DEG C, assay shows, the microstructure and property rolling rod is good, be better than the Nimonic80A alloy bar material of usual rolling, demonstrate the feasibility and the validity that adopt alloy hot rolling adhesive thermal insulating cotton of the present invention to carry out refractory alloy insulation hot rolling, breach employing lower heating-up temperature insulation hot rolling Nimonic80A alloy to obtain the difficult problem that all even and fine crystalline substance rolls rod.
Above-described embodiment does not limit the present invention in any way, and the technological scheme that the mode that every employing is equal to replacement or equivalent transformation obtains all drops in protection scope of the present invention.
Claims (10)
1. an alloy hot rolling adhesive thermal insulating cotton, described adiabatic cotton is rollable, it is a rectangular planes plate after expansion, the hole of the two Bond of pouring is covered with in the whole front of described adiabatic cotton rectangular planes plate, the spacing of adjacent holes is L=20 ~ 50mm, the diameter of described hole is 6 ~ 10mm, and the pass between the depth H 2 of described hole and the thickness H1 of described adiabatic cotton is: H2=(0.6 ~ 0.8) H1, and H1-H2 >=2mm; The two area sum S1 of Bond in described adiabatic cotton front and the proportionate relationship of adiabatic cotton front gross area S2 are S1:S2=0.55 ~ 0.80, it is characterized in that: the mixture that the described pair of Bond is made up of room temperature Bond and the higher glass powder of softening point, the glass powder softening point temperature that described softening point is higher is 850 ~ 950 DEG C, and described hole inner bottom part is provided with the friction matter of frictional force between strengthening workpiece and roll.
2. a kind of alloy hot rolling adhesive thermal insulating cotton according to claim 1, is characterized in that: described friction matter is magnesia.
3. a kind of alloy hot rolling adhesive thermal insulating cotton according to claim 2, is characterized in that: the boundary dimensions of described magnesia is 1.5mm-4mm.
4. a kind of alloy hot rolling adhesive thermal insulating cotton according to Claims 2 or 3, is characterized in that: the magnesia quantity bottom each hole is 2-6.
5. a kind of alloy hot rolling adhesive thermal insulating cotton according to claim 1, it is characterized in that: on the front of whole adiabatic cotton, each hole is considered as a point, described hole is with square or face centered tetragonal lattice structure form in being periodically uniformly distributed, and each dot matrix all parallels with the length arrowhead of adiabatic cotton or width arrowhead.
6. a kind of alloy hot rolling adhesive thermal insulating cotton according to claim 1, is characterized in that: the glass powder main component that described softening point is higher comprises SiO
2, B
2o
3, Al
2o
3and CaO.
7. a manufacture method for alloy hot rolling adhesive thermal insulating cotton, is characterized in that comprising the following steps:
(1) curling adiabatic cotton is launched, open puncture hole in the front of adiabatic cotton plane, so that friction matter is placed in bottom hole and the two Bond of pouring; Maximum diameter 6 ~ the 10mm of hole, depth H 2 is less than the thickness H1 of adiabatic cotton, H2=(0.6 ~ 0.8) H1, H1-H2 >=2mm; Each hole is considered as a point, be covered with the hole in adiabatic cotton front, on the front of whole adiabatic cotton, hole is uniformly distributed in periodicity with square or face centered tetragonal lattice structure form, each dot matrix all parallels with the length arrowhead of adiabatic cotton or width arrowhead, the adjacent spacing L=20 ~ 50mm of the adjacent holes paralleled with length arrowhead or width arrowhead;
(2) friction matter is inserted bottom the hole of adhesive thermal insulating cotton;
(3) preparation of two Bond: by glass powder higher to room temperature Bond, softening point by (40 ~ 20): the part by weight Homogeneous phase mixing of (60 ~ 80), the glass powder mixture that room temperature Bond, softening point are higher, add water and fully stir into two Bond, the glass powder softening point temperature that described softening point is higher is 850 ~ 950 DEG C;
(4) two Bond is poured into adiabatic cotton front to have inserted in the hole of magnesia, after drying, should remain basically stable with the front of adiabatic cotton in the surface of two Bond, the two area sum S1 of Bond in adiabatic cotton front and the proportionate relationship of adiabatic cotton front gross area S2 are, S1:S2=0.55 ~ 0.80, and be the distribution of discontinuous point-like in the front of adiabatic cotton, should there is not film-form, plain film shape, strip in the shape of two Bonds in adiabatic cotton front.
8. the manufacture method of a kind of alloy hot rolling adhesive thermal insulating cotton according to claim 7, it is characterized in that: in described step (2), described friction matter is magnesia.
9. the manufacture method of a kind of alloy hot rolling adhesive thermal insulating cotton according to claim 8, is characterized in that: each hole puts 2-6 magnesia, and the boundary dimensions of every magnesia is 1.5mm-4mm.
10. the manufacture method of a kind of alloy hot rolling adhesive thermal insulating cotton according to claim 7, is characterized in that: in described step (3), also comprise the step heated two Bond.
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| JP5482533B2 (en) * | 2010-07-16 | 2014-05-07 | 新日鐵住金株式会社 | Antioxidant, method for producing antioxidant, and method for producing metal material |
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| CN1654876A (en) * | 2005-02-03 | 2005-08-17 | 宝钢集团上海五钢有限公司 | Sticking adiabatic cotton and method of making the same |
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Effective date of registration: 20210209 Address after: 215500 No.118, Hualian Road, Tonggang Industrial Park, Meili Town, Changshu City, Suzhou City, Jiangsu Province Patentee after: CHANGSHU LONGTENG SPECIAL STEEL Co.,Ltd. Address before: No.6 Xinggang Road, Changshu Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee before: JIANGSU SUNAN HEAVY MACHINERY TECHNOLOGY Co.,Ltd. |