CN109201761A - A kind of thermal insulation coating material containing glass powder lubricant, preparation method and application - Google Patents
A kind of thermal insulation coating material containing glass powder lubricant, preparation method and application Download PDFInfo
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- CN109201761A CN109201761A CN201710515783.0A CN201710515783A CN109201761A CN 109201761 A CN109201761 A CN 109201761A CN 201710515783 A CN201710515783 A CN 201710515783A CN 109201761 A CN109201761 A CN 109201761A
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- glass powder
- thermal insulation
- coating material
- insulation coating
- containing glass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C9/00—Cooling, heating or lubricating drawing material
- B21C9/02—Selection of compositions therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Thermal Insulation (AREA)
Abstract
The present invention relates to a kind of thermal insulation coating material, the matrix of thermal insulation coating material is the heat preservation asbestos mat embedded with alumina silicate fibre；The alumina silicate fibre is the glass powder that mass ratio is 5:0.5-2:8-18, binder and water；In porous structure of the alumina silicate fibre according to the form indentation asbestos mat surface of array distribution, the equally distributed pit containing glass powder is formed.Additionally provide the preparation method of the covering material, by heat preservation asbestos by rolling to form porous structure, alumina silicate fibre according to array distribution form indentation asbestos mat surface it is porous in, formed it is equally distributed containing glass powder pit compacting after the completion of, toasted 3-7 hours at 150-300 DEG C.Additionally provide the application in the extruding of the covering material pipe as cladding.Streamline operation of the present invention, improves efficiency, ensure that glass powder in the uniformity on extruded stock surface, Improving The Quality of Products.
Description
Technical field
The present invention relates to the present invention relates to a kind of lubrication heat preservation claddings containing glass powder that can be used for big specification steel tube extrusion
The manufacture and application method of material.
Background technique
With the raising of equipment manufacturing level and the harshness of applying working condition condition, the seamless of high quality and large size is needed
Pipe, being realized by hot extrusion approach for such steel pipe can obtain optimal tissue and performance, and domestic Shuo Jia enterprise throws huge fund and draws
Into large-scale extruder, no matter horizontal or vertical extruder, all there are problems that one is difficult to overcome, be exactly to squeeze greatly
When specification steel pipe, since corresponding pipe specification is also very big, after heating of pipe blank is come out of the stove, start to squeeze it into extruder
In preceding this period, need to carry out pipe the sequence of operations such as inside and outside smearing glass powder lubricant, it is time-consuming long, in addition
Glass powder lubricant self-temperature is lower, keeps pipe temperature drop very big, is always easy to appear in extrusion process and produces since temperature is too low
The major defects such as raw transverse fissure, wire drawing, layering even bored vehicle, have seriously affected product quality and lumber recovery.In addition, certain steel
Kind, under high temperature in air exposure duration it is long if, thicker oxide layer easy to form, these oxide layers in extrusion process can
Seriously affect extruded tube surface quality.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of, and the heat preservation containing glass powder lubricant coats material
Material, the material can meet heat preservation, anti-oxidation and lubrication effect simultaneously, can greatly improve the quality of big specification extruded tube with
Lumber recovery.The invention solves another technical problem be to provide the preparation method of the thermal insulation coating material.The present invention will solve
Another technical problem certainly, is to provide the application of the thermal insulation coating material.
The technical scheme is that a kind of thermal insulation coating material containing glass powder lubricant, the heat preservation coats material
The matrix of material is the heat preservation asbestos mat of alumina silicate fibre, the glass powder that centre is 5:0.5-2:8-18 embedded with mass ratio, bonding
The glass powder mixture of three kinds of substances of agent and water；The glass powder mixture is pressed into asbestos mat surface according to the form of array distribution
Porous structure in, form the equally distributed pit containing glass powder, the diameter 15-25mm of the pit, every square metre 200
~300 pits, the spacing of pit are 20~50mm, and the depth of pit is 20~30mm.
Thermal insulation coating material according to the present invention containing glass powder lubricant, it is preferred that the binder is selected from hydroxyl
Methylcellulose.
Thermal insulation coating material according to the present invention containing glass powder lubricant, it is preferred that the heat preservation asbestos are can
The heat preservation asbestos of stickup.The main component of the glass powder is aluminium oxide and silica, and other micro constitutents are for adjusting glass
The fusing point and viscosity of glass powder.
The present invention also provides the preparation method of the above-mentioned thermal insulation coating material containing glass powder lubricant,
Asbestos will be kept the temperature to roll by several time of punch press, form special porous structure, the diameter of the porous structure
For 15~25mm, every square metre of 200~300 holes, the spacing in hole is 20~50mm, and the depth in hole is 20~30mm；By glass
Powder and binder mixing, add water, are mixed into paste, obtain glass powder mixture, the glass powder, the matter of binder and water
Amount ratio is 5:0.5-2:8-18；
The glass powder mixture according to array distribution form indentation asbestos mat surface it is porous in, formation is uniformly distributed
Containing glass powder pit compacting after the completion of, toasted 3-7 hours at 150-300 DEG C.
Special porous structure is formed, is conducive to uniformly store glass powder lubricant.The heat preservation asbestos can be resistant to
1200 DEG C of high temperature below.
Preferably, the water is 1.5-2.5 times of binder and glass powder total weight.
The preparation method of thermal insulation coating material according to the present invention containing glass powder lubricant, it is preferred that described viscous
It ties agent and is selected from hydroxymethyl cellulose.
Further, the water that addition accounts for its weight 5-10% in the binder hydroxymethyl cellulose stirs into homogeneous paste
Afterwards, then with glass powder it mixes, adds the water for accounting for 1.5-2.5 times of weight of mixture.
The preparation method of thermal insulation coating material according to the present invention containing glass powder lubricant, it is preferred that the glass
Glass powder includes aluminium oxide and silica；The heat preservation asbestos are the heat preservation asbestos of Pasting.
The present invention also provides the above-mentioned thermal insulation coating materials containing glass powder lubricant in the extruding of pipe as packet
The application covered.Thermal insulation coating material plays the role of heat preservation, anti-oxidation and lubrication in pipe extrusion process.
In the applications described above, it is preferred that the pipe is the heavy gauge tube blank for being greater than Φ 700mm more than diameter；Institute
The equipment for stating extruding is vertical extruder.
In the applications described above, it is preferred that after being warming up to scheduled requirement for heating of pipe blank, comes out of the stove and coat the material,
Then heat preservation reasonable time is melted down again, then extruding of coming out of the stove.
Further, specific application method is that pipe is heated to guarantor according to≤100 DEG C/h of heating rate
It after 1100~1250 DEG C of temperature, comes out of the stove and coats the material, melt down the temperature according to 1100~1250 DEG C again within 0.5 hour
Degree heat preservation 1~3 hour, then extruding of coming out of the stove, squeeze and use 3~50,000 tons of vertical extruders, and extruding force is squeezed at 2~4.5 ten thousand tons
400~900mm of outer diameter out, wall thickness are the steel pipe of 40~120mm.
By special internal structure in covering material, the lubrication that model is corresponded to required for hot extrusion has uniformly been adsorbed
With glass powder, viscous the step of taking glass powder will be rolled by eliminating after extruded stock heats, streamline operation improves effect
Rate ensure that glass powder in the uniformity on extruded stock surface, Improving The Quality of Products.Its application method is pipe according to predetermined heat
Technique is heated to formulate after temperature kept the temperature, and is come out of the stove, is coated the material, is melted down according to steel grade difference and keep the temperature the different time,
Then it comes out of the stove extruding.
The covering material is mainly used for the extruding of heavy gauge tube blank of the diameter greater than Φ 700mm, meets extrusion tube blank and adds
To the heat preservation demand started in extrusion process after heat, it can be effectively prevented and squeeze the various of generation because blank surface temperature drop is excessive
The oxidation of blank surface also can be effectively prevented in defect, and the thickness of oxide layer is greatly decreased, which also meets hot extrusion
Glass powder lubrication needs during pressure.
The beneficial effects of the present invention are:
The present invention is rolled by several time, forms uniform pit storage tissue, glass powder and hydroxylmethyl cellulose is added
Glass powder lubricant and matrix heat-insulating material is firmly combined by special baking process in element binder as main component,
High viscosity high-temperature adhesives are added in use, guarantees that covering material is securely coated on extruded stock surface, reaches best
Squeezing effect.
Since sheath material has been completed the lubricating action to pipe, thus pipe after coming out of the stove can directly into
Extruder squeezes, and substantially increases production efficiency, original 15 minutes or so the time come out of the stove to extruding is shortened to 2 minutes
Effect, the protective effect of sheath material in addition, pipe temperature drop very little, extruding force and pipe plasticity can greatly be changed when extruding
It is kind.Due to the gap very little of extrusion tube blank and extrusion cylinder, when entering extrusion cylinder, heat preservation asbestos layer meeting Automatic-falling, only
There is the glass powder (being at this time liquid) for being adhered to surface that can enter extrusion cylinder together, in extrusion process, due to blank temperature
More uniform (surface temperature drop is small), lubricant are evenly distributed on pipe surface and (compare and spill painting or roller coating glass powder, glass with traditional
Glass powder readily flows to one time after dissolving, and lubrication is uneven when causing to squeeze), the actual mass of extruded tube can be greatly improved.
Detailed description of the invention
Fig. 1 is the schematic diagram that asbestos mat surface forms the equally distributed pit containing glass powder.
Fig. 2 is the schematic diagram that covering material is completely coated on behind pipe surface.
Specific embodiment
A kind of thermal insulation coating material containing glass powder lubricant for big specification steel pipe hot extrusion, matrix is silicic acid
The heat preservation asbestos mat of aluminum fiber, alumina silicate fibre be with aluminium oxide and silica manmade inorganic fibre as main component, it is resistance to
High-temperature behavior is good, elastic under the high temperature conditions.According to the different steel grades of extruding, the glass powder of different model is selected, with Ni-based
For alloy C-HRA-1, selection is GW9 glass powder that day is made every effort to achieve, by glass powder and binder (hydroxymethyl cellulose) according to
The ratio of 5:1 mixes, and adds the water of mixture double weight, is mixed into paste, pours into special equipment, by it according to array point
The form of cloth is pressed into asbestos mat surface, forms the equally distributed pit containing glass powder, as shown in Figure 1.The diameter of pit
20mm, 20~50mm of spacing.After the completion of compacting, to carry out 200 DEG C and dry 5 hours, it is spare.
After preparing sheath material, before extrusion, it is ready work, by sheath material according to the length of pipe, and
Row is laid on irony platform, and in heating of pipe blank to predetermined temperature and after completing heat preservation, pipe is come out of the stove, is flat on the packet completed
On cover material, by the tilt angle of thermoacoustic prime engine platform, roll pipe on sheath material, at this time due in sheath material
Glass powder and binder fusing can make sheath material be sticked to pipe surface automatically, and pipe rolls after a week, sheath material complete packet
Pipe surface (state after being covered to complete is shown in Fig. 2) is overlayed on, then pipe is melted down and is kept the temperature again, according to the difference of steel grade,
Different soaking times is selected, can start to squeeze after time is up.
The present invention is implemented on ten thousand tons of vertical extruders of X of certain company, has carried out martensite heat-resistant steel, austenite respectively
The extruding case study on implementation of stainless steel and nickel base superalloy is as follows:
Embodiment 1
Martensite heat-resistant steel P91 is squeezed, pipe specification is Φ 700mm, and extruded tube specification is 350 × 76mm of Φ, heating
Technique is 1180 DEG C and keeps the temperature 3 hours, and de-scaling operation is carried out after coming out of the stove, and then carries out jacket, and sheath material is selected in this patent and related to
And using alumina silicate fibre heat preservation asbestos mat as matrix, be embedded in GW11 glass powder sheath material, by pipe in sheath material
On rolling, sheath material is completely coated on to pipe surface, then melts down heating again, 1180 DEG C keep the temperature 1 hour, straight after coming out of the stove
Extruding is connect, the good extruded tube of surface quality is obtained, is detected through process thermometric and timing, discovery does not have to packet using cladding method ratio
Since set method squeeze come out of the stove to, and the used time shortened to 3 points 20 seconds from original 34 seconds 15 minutes, and temperature drop is from original 237 DEG C
122 DEG C are reduced to, extrusion deformation resistance reduces 26%, and extruded tube surface quality is obviously improved.
Embodiment 2
Austenitic stainless steel 304 is squeezed, pipe specification is Φ 900mm, and extruded tube specification is 630 × 105mm of Φ, heating
Technique is 1200 DEG C and keeps the temperature 8 hours, and jacket is directly carried out after coming out of the stove, and sheath material is selected involved in this patent with aluminium silicate fiber
Maintenance fire stons cotton blanket is matrix, the sheath material of GW9 glass powder is embedded in, by rolling of the pipe on sheath material, by jacket
Material is completely coated on pipe surface, then melts down heating again, and 1200 DEG C keep the temperature 1 hour, directly squeeze after coming out of the stove, and obtains surface
The second best in quality extruded tube is detected through process thermometric and timing, and discovery does not have to cladding method using cladding method ratio, from come out of the stove to
Start to squeeze, the used time shortened to 3 points 50 seconds from original 21 seconds 16 minutes, and temperature drop is reduced to 137 DEG C from original 253 DEG C, squeezed
Compressive strain drag reduces 27%, and extruded tube surface quality is obviously improved.
Embodiment 3
Nickel base superalloy C-HRA-1 has been squeezed, pipe specification is Φ 700mm, and extruded tube specification is 350 × 76mm of Φ,
Heating process is 1170 DEG C and keeps the temperature 5 hours, and jacket is directly carried out after coming out of the stove, and sheath material is selected involved in this patent with silicic acid
It is matrix that aluminum fiber, which keeps the temperature asbestos mat, is embedded in the sheath material of GW9 glass powder, will by rolling of the pipe on sheath material
Sheath material is completely coated on pipe surface, then melts down heating again, and 1170 DEG C keep the temperature 1 hour, directly squeeze after coming out of the stove, and obtains
The good extruded tube of surface quality is detected through process thermometric and timing, and discovery does not have to cladding method using cladding method ratio, from out
Furnace is to starting to squeeze, and the used time shortened to 3 points 05 second from original 21 seconds 14 minutes, and temperature drop is reduced to 120 from original 239 DEG C
DEG C, extrusion deformation resistance reduces 28%, and extruded tube surface quality is obviously improved.
Embodiment 4
Nickel base superalloy C-HRA-1 has been squeezed, pipe specification is Φ 900mm, and extruded tube specification is 485 × 85mm of Φ,
Heating process is 1180 DEG C and keeps the temperature 8 hours, and jacket is directly carried out after coming out of the stove, and sheath material is selected involved in this patent with silicic acid
It is matrix that aluminum fiber, which keeps the temperature asbestos mat, is embedded in the sheath material of GW9 glass powder, will by rolling of the pipe on sheath material
Sheath material is completely coated on pipe surface, then melts down heating again, and 1180 DEG C keep the temperature 2 hours, directly squeeze after coming out of the stove, and obtains
The good extruded tube of surface quality is detected through process thermometric and timing, and discovery does not have to cladding method using cladding method ratio, from out
Furnace is to starting to squeeze, and the used time shortened to 3 points 48 seconds from original 33 seconds 15 minutes, and temperature drop is reduced to 137 from original 260 DEG C
DEG C, extrusion deformation resistance reduces 31%, and extruded tube surface quality is obviously improved.
Glass powder and hydroxymethyl cellulose binder as main component is added in the present invention, by special baking process,
Glass powder lubricant and matrix heat-insulating material is firmly combined, high viscosity high-temperature adhesives are added in use, guarantees packet
It covers material and is securely coated on extruded stock surface, reach best squeezing effect.Streamline operation of the present invention, improves efficiency,
It ensure that glass powder in the uniformity on extruded stock surface, Improving The Quality of Products.
Claims (10)
1. a kind of thermal insulation coating material containing glass powder lubricant, it is characterised in that: the matrix of the thermal insulation coating material is
The heat preservation asbestos mat of alumina silicate fibre, the glass powder that centre is 5:0.5-2:8-18 embedded with mass ratio, binder and three kinds of water
The glass powder mixture of substance；The glass powder mixture is pressed into the porous structure on asbestos mat surface according to the form of array distribution
In, the equally distributed pit containing glass powder is formed, the diameter 15-25mm of the pit, 200~300 every square metre are recessed
Hole, the spacing of pit are 20~50mm, and the depth of pit is 20~30mm.
2. the thermal insulation coating material according to claim 1 containing glass powder lubricant, it is characterised in that: the binder
Selected from hydroxymethyl cellulose.
3. the thermal insulation coating material according to claim 1 containing glass powder lubricant, it is characterised in that: the insulation stone
Cotton is the heat preservation asbestos of Pasting.
4. the preparation method of the thermal insulation coating material containing glass powder lubricant described in claim 1, it is characterised in that:
Asbestos will be kept the temperature to roll by several time of punch press, form special porous structure, the diameter of the porous structure is 15
~25mm, every square metre of 200~300 holes, the spacing in hole are 20~50mm, and the depth in hole is 20~30mm；By glass powder and
Binder mixing, adds water, is mixed into paste, obtain glass powder mixture, the glass powder, the mass ratio of binder and water
Example is 5:0.5-2:8-18；
The glass powder mixture according to array distribution form indentation asbestos mat surface it is porous in, formed and equally distributed contained
After the completion of thering is the pit of glass powder to suppress, toasted 3-7 hours at 150-300 DEG C.
5. the preparation method of the thermal insulation coating material according to claim 4 containing glass powder lubricant, it is characterised in that: institute
It states binder and is selected from hydroxymethyl cellulose.
6. the preparation method of the thermal insulation coating material according to claim 5 containing glass powder lubricant, it is characterised in that: institute
State binder hydroxymethyl cellulose be added account for its weight 5-10% water stir into homogeneous paste after, then mix with glass powder, then
The water for accounting for 1.5-2.5 times of weight of mixture is added.
7. the preparation method of the thermal insulation coating material according to claim 4 containing glass powder lubricant, it is characterised in that: institute
Stating glass powder includes aluminium oxide and silica；The heat preservation asbestos are the heat preservation asbestos of Pasting.
8. the answering as cladding in the extruding of pipe of the thermal insulation coating material containing glass powder lubricant described in claim 1
With.
9. application according to claim 8, it is characterised in that: the pipe is the big rule for being greater than Φ 700mm more than diameter
Lattice pipe；The equipment of the extruding is vertical extruder.
10. application according to claim 8, it is characterised in that: after being warming up to scheduled requirement for heating of pipe blank, packet of coming out of the stove
The material is covered, then melts down heat preservation reasonable time again, then extruding of coming out of the stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710515783.0A CN109201761A (en) | 2017-06-29 | 2017-06-29 | A kind of thermal insulation coating material containing glass powder lubricant, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710515783.0A CN109201761A (en) | 2017-06-29 | 2017-06-29 | A kind of thermal insulation coating material containing glass powder lubricant, preparation method and application |
Publications (1)
| Publication Number | Publication Date |
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| CN109201761A true CN109201761A (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710515783.0A Pending CN109201761A (en) | 2017-06-29 | 2017-06-29 | A kind of thermal insulation coating material containing glass powder lubricant, preparation method and application |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB139455A (en) * | 1919-02-10 | 1920-11-25 | Ball Rolled Tube Corp | A new or improved method and apparatus for drawing metal tubes |
| AT309958B (en) * | 1970-09-19 | 1973-09-10 | Kobe Steel Ltd | Method of making glass sheets for use in the extrusion of metals |
| 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 |
| CN1683097A (en) * | 2005-03-04 | 2005-10-19 | 宝钢集团上海五钢有限公司 | Heat keeping and forging and blank cogging method for GH742 alloy large steel ingot |
| CN102689391A (en) * | 2012-05-14 | 2012-09-26 | 河间市九天耐火保温材料有限公司 | Aluminum silicate fiber collodion cotton and production method for highly processed product of aluminium silicate fiber collodion |
-
2017
- 2017-06-29 CN CN201710515783.0A patent/CN109201761A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB139455A (en) * | 1919-02-10 | 1920-11-25 | Ball Rolled Tube Corp | A new or improved method and apparatus for drawing metal tubes |
| AT309958B (en) * | 1970-09-19 | 1973-09-10 | Kobe Steel Ltd | Method of making glass sheets for use in the extrusion of metals |
| 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 |
| CN1683097A (en) * | 2005-03-04 | 2005-10-19 | 宝钢集团上海五钢有限公司 | Heat keeping and forging and blank cogging method for GH742 alloy large steel ingot |
| CN102689391A (en) * | 2012-05-14 | 2012-09-26 | 河间市九天耐火保温材料有限公司 | Aluminum silicate fiber collodion cotton and production method for highly processed product of aluminium silicate fiber collodion |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200520 Address after: 200940 room 1277, building 216, 1269 Shuishui Road, Baoshan District, Shanghai Applicant after: Baowu Special Metallurgy Co., Ltd Address before: 200940 No. 1269, Fisheries Road, Shanghai, Baoshan District Applicant before: BAOSTEEL SPECIAL STEEL Co.,Ltd. |
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Application publication date: 20190115 |
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