CN106346377A - Green phase change and heat storage grinding wheel for dry abrasive cutting and manufacturing method thereof - Google Patents
Green phase change and heat storage grinding wheel for dry abrasive cutting and manufacturing method thereof Download PDFInfo
- Publication number
- CN106346377A CN106346377A CN201610865211.0A CN201610865211A CN106346377A CN 106346377 A CN106346377 A CN 106346377A CN 201610865211 A CN201610865211 A CN 201610865211A CN 106346377 A CN106346377 A CN 106346377A
- Authority
- CN
- China
- Prior art keywords
- base body
- base
- pumping
- heat accumulation
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0054—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by impressing abrasive powder in a matrix
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention provides a green phase change and heat storage grinding wheel for dry abrasive cutting. The green phase change and heat storage grinding wheel comprises a grinding base body and an abrasive material arranged at the outer end of the grinding base body, wherein an annular pipe cavity is formed in position, close to the outer end, in the grinding base body, a circle of heat storage element is arranged in the base body at the inner end of the annular pipe cavity, a working medium liquid at normal temperature is arranged in the annular pipe cavity, the grinding base body is provided with an air exhausting and liquid injection hole communicated with the annular pipe cavity and the outside, and the grinding base body is provided with a plugging device for plugging the air exhausting and liquid injection hole. The annular pipe cavity forms an annular heat pipe after vacuumizing, working medium injection and tail sealing, the phase change heat transfer effect of the annular heat pipe can ensure that grinding heat is rapidly transferred to the inside of the grinding wheel during machining, the heat storage element can further absorb and store itself and then transfers the heat to the outside through the grinding base body, further the effect of reducing grinding temperature is achieved, and the green phase change and heat storage grinding wheel is especially suitable for a dry abrasive cutting machining occasion.
Description
Technical field
The present invention relates to a kind of emery wheel, belong to abrasive tool industry, specifically, relate to a kind of dry abrasive cutting phase transformation of green and store up
Hot emery wheel, further relates to a kind of method manufacturing this emery wheel.
Background technology
Most mechanical energy is converted into heat energy due in removal materials process by grinding, if these heats are not
Can dredge away from grinding arc area in time, consequent grinding high temperature easily causes surface of the work hot injury, wheel life contracting
The ill effect that short and Workpiece Machining Accuracy reduces.For reaching the purpose of timely cooling, conventional solution be in grinding plus
Using coolant in work.But in fact, because grinding arc area is comparatively closed, in order to effectively coolant is sent to
Grinding arc area enhanced heat exchange, its consumption and effluxvelocity become increasing, and can be caused a series of in a large number using coolant
Negative issue, as improper in liquid waste processing by serious environment pollution, a large amount of using coolant will increase production cost, energy resource consumption with
And coolant can be caused damage to the healthy of operator using process, this is runed counter to current green manufacturing theory.
Therefore, while reducing (or need not) coolant usage amount, how to realize effectively reducing grinding temperature, this is
Become the importance that must take into account in the future development of Grinding Technology field.
In order to solve with present on problem, people are seeking a kind of preferable technical solution always.
Content of the invention
The purpose of the present invention is for the deficiencies in the prior art, there is provided a kind of design science, structure be novel, can be effective
Reduce the green dry abrasive cutting phase-change thermal storage emery wheel of grinding temperature.
To achieve these goals, the technical solution adopted in the present invention is: a kind of green dry abrasive cutting phase-change thermal storage sand
Wheel, the abrasive material including grinding wheel base body with located at described grinding wheel base body outer end, it is provided with annular at outer end in described grinding wheel base body
Tube chamber, setting one circle heat accumulation element in the inner matrix of described perimetrical lumen, being provided with described perimetrical lumen under room temperature is liquid
The working medium of state, has in described grinding wheel base body and connects described perimetrical lumen and extraneous pumping liquid injection hole, on described grinding wheel base body
The plugging device of setting closure described pumping liquid injection hole.
Described on base, described grinding wheel base body includes base and cover plate, and described base arranges annular recess, described heat accumulation unit
Part is arranged on the inner side of described annular recess, and described cover plate and described tube chamber welds with base are fixed and formed described perimetrical lumen.Described
The outer face of heat accumulation element is in plane or wavy or cambered surface.
Described on base, described base opens up a handle hole vertically, described pumping liquid injection hole from described perimetrical lumen according to
Secondary through described heat accumulation element and described base to described operation in the hole, described plugging device is seal plug, described seal plug
Head is arranged on described operation in the hole, the deep equality of the length of described seal plug and described handle hole.
Described on base, it also includes being evacuated fluid injection connector, and described handle hole is through hole, described pumping fluid injection connector
Diameter is consistent with described seal plug, is provided for connecting described pumping liquid injection hole and the external world in described pumping fluid injection connector
L type is bored a hole.
Described on base, described heat accumulation element is red copper or the copper alloy of circular ring, and described heat accumulation element passes through close-fitting
Conjunction mode is arranged in the annular groove of described base.
Described on base, it is evacuated fluid injection connector and described seal plug all using the radial direction with 3 groups of sealing rings and groove
Movable sealing structure.
Described on base, described handle hole size is φ 8-20mm, and surface roughness is less than ra0.8 μm, and described annular is recessed
Well width is 35-70mm, and the size of described pumping liquid injection hole is φ 1-2mm.
Described on base, the annular section width of described heat accumulation element is 15-40mm；The outer face of described heat accumulation element is flat
Face or wavy or cambered surface and described outer face are through bead.
Manufacture the above-mentioned green dry abrasive cutting method of phase-change thermal storage emery wheel, comprise the following steps:
Step 1), make base, cover plate, heat accumulation element, pumping fluid injection connector and seal plug according to design size；
Step 2), heat accumulation element is assemblied in the annular groove of base, and ensure pumping fluid injection hole section on heat accumulation element with
Pumping fluid injection hole section alignment on base；Afterwards cover plate is assemblied on base, is welded and fixed；
Step 3) carries out vacuum leak hunting to weld seam, if finding, pore carries out repair welding；
Step 4) carries out polish to grinding wheel base body, and its cylindrical and end face is machined to dimensional requirement；Again weld seam is carried out afterwards
Secondary vacuum is hunted leak, if finding, pore carries out secondary repair welding, subsequently adopts method for grinding to remove the excess solder of wheel face；
Step 5) is electroplated using diamond or cubic boron nitride abrasive materials；
Step 6) is bondd being evacuated fluid injection connector by coaxial requirement with seal plug and is installed sealing ring, then in sealing ring
Apply a small amount of vacuseal grease with operation hole surface；Subsequently pumping fluid injection connector is arranged in the handle hole of base, protects simultaneously
L type perforation on card pumping fluid injection connector is corresponding with the pumping fluid injection hole section on base；
Step 7) is bored a hole by l type and is evacuated liquid injection hole and perimetrical lumen is carried out with evacuation and injection working medium, then slowly will be close
Block head elapses to the position substituting pumping fluid injection connector, perimetrical lumen is evacuated, injection working medium and tail are honored as a queen formation ring
Shape heat pipe；Finally seal plug is departed from vacuum pumping liquid injection connector, complete emery wheel manufacture.
Hinge structure of the present invention has prominent substantive distinguishing features and significantly improves, and specifically, the present invention has
Have the advantage that
1st, the technology that relatively existing use coolant is cooled down, this emery wheel utilizes the high heat transfer property of annular heat pipe, will grind
In quick, the lasting heat accumulation element being transferred to intrinsic silicon of the heat in Xiao Hu area, afterwards will be above-mentioned by grinding wheel base body itself
Heat is dredged to surrounding, is achieved in reducing the purpose of grinding temperature, it is to avoid brought using a large amount of coolants
Series of problems.This emery wheel is applied to the green dry abrasive cutting processing of various types of materials.
2nd, perimetrical lumen is formed after assembling, welding by groove and cover plate, and heat accumulation element is embedded in groove, and structure is simply easy
Molding.
3rd, setting pumping fluid injection connector, overall specification is consistent with plug, and the perforation of l type connects with after pumping liquid injection hole docking
The external world, carries out being evacuated by the replacement of plug and pumping fluid injection connector, fluid injection and closure, structure easy to use so that emery wheel
Internal annular heat pipe preparation process is simple.
Brief description
Fig. 1 is the structural representation of Green dry abrasive cutting phase-change thermal storage emery wheel of the present invention.
Fig. 2 is the phase-change thermal storage schematic diagram of annular heat pipe in the present invention.
Fig. 3 is the use state schematic diagram being evacuated fluid injection connector in the present invention.
Fig. 4-1,4-2,4-3 are the structural representations in heat accumulation element difference embodiment in the present invention.
In figure: 1. base；2. cover plate；3. perimetrical lumen；4. heat accumulation element；5. working medium；6. seal plug；7. abrasive material；8.
Pumping fluid injection connector；9.l type is bored a hole；10. sealing ring；11. pumping liquid injection holes.
Specific embodiment
Below by specific embodiment, technical scheme is described in further detail.
As shown in figure 1, a kind of green dry abrasive cutting phase-change thermal storage emery wheel, including grinding wheel base body with located at described grinding wheel base body
The abrasive material 7 of outer end, described abrasive material 7 is diamond or cubic boron nitride, and is fixedly arranged at outside above-mentioned grinding wheel base body by electro-plating method
Disc and endface position.
Described grinding wheel base body includes base 1 and cover plate 2, and on described base 1, setting width is the annular recess of 60mm, described
The heat accumulation element 4 of annular is installed by tight fit mode (as interference fit) in the inner side of annular recess, and heat accumulation element 4 can be using purple
The material of the good heat-transfer such as copper or copper alloy makes, the outer face of heat accumulation element 4 through bead, described heat accumulation element 4
Annular section width be 30mm.
Described cover plate 2 is welded and fixed and is formed perimetrical lumen 3 with described base 1, is provided with room temperature in described perimetrical lumen 3
It is down the working medium 5 of liquid.
As shown in Fig. 4-1,4-2 and 4-3, in various embodiments, the outer face of described heat accumulation element 4 can be flat
Face or wavy or cambered surface, being designed as cambered surface or wavy purpose is to increase heat exchange area.
The handle hole that one size is φ 15mm is opened up on described base 1, surface roughness is less than ra0.8 μm, institute vertically
State heat accumulation element 4 and the pumping liquid injection hole 11 connecting handle hole and perimetrical lumen 3 is opened up on described base 1, be evacuated liquid injection hole 11
Size be φ 1.5mm, described operation in the hole installs seal plug 6.
As shown in figure 3, for convenience of pumping and fluid injection, setting pumping fluid injection connector 8, described handle hole is set to lead to
Hole, the diameter of described pumping fluid injection connector 8 is consistent with described seal plug 6, is provided in described pumping fluid injection connector 8
Connection described pumping liquid injection hole 11 and extraneous l type perforation 9.Described pumping fluid injection connector and described seal plug 6 all adopt
There is the radial moving sealing structure of 3 groups of sealing rings 10 and groove.
When specifically used, fluid injection connector 8 update in the hole will be evacuated, and by l type perforation docking pumping liquid injection hole 11,
The external world is connected with perimetrical lumen 3, by external equipment evacuation, is then injected into working medium 5, is finally sealed with seal plug 6, shape
Become described annular heat pipe.
According to the applying working condition of emery wheel, described annular heat pipe is prepared according to moderate temperature heat pipe, under room temperature is therefore
The working medium 5 of liquid, such as water, ethanol, acetone etc., when its working medium 5 injection rate rotates for emery wheel, working medium 5 is on perimetrical lumen 3 wall
Form the volume that uniform liquid film thickness is corresponding to 1-3mm.
As shown in Fig. 2 during stone, producing substantial amounts of grinding heat, and the effect of the phase-change heat transfer of annular heat pipe can be protected
Heat is rapidly transferred to the heat accumulation element 4 within emery wheel by card, and this partial heat is then further absorbed storage by heat accumulation element 4
There is itself, then pass through the larger feature of grinding wheel base body itself heat exchange area, heat is gradually transferred to external environment, realize
The quick heat radiating in wheel grinding arc area.
The heat storage capacity of described heat accumulation element is assessed as follows.Due to above-mentioned annular heat pipe and heat accumulation element have excellent
Good heat conductivity it is assumed that the temperature of emery wheel internal (storage heating element portion) is approximately consistent, now the heat storage capacity of emery wheel can by with
Lower formula is estimated:
q=cmδt
Wherein: the heat of q storage, j；
C specific heat capacity, j/ (kg DEG C)；
M mass, kg；
The average temperature rising of heat accumulation element internal after the heat absorption of δ t emery wheel, DEG C.
This emery wheel can utilize annular heat pipe and the storage of emery wheel therein in grinding without using coolant simultaneously
Thermal element 4 promptly by inside the heat storage of grinding arc area to emery wheel, with after constantly heat is dredged to surrounding through emery wheel
Environment, thus realizing reducing the effect of grinding temperature, is particularly well-suited to the green dry abrasive cutting processing of various types of materials.
Manufacture the above-mentioned green dry abrasive cutting method of phase-change thermal storage emery wheel, comprise the following steps:
Step 1), make base 1, cover plate 2, heat accumulation element 4, pumping fluid injection connector 8 and seal plug 6 according to design size,
Select the sealing ring 10 of suitable dimension and type；
Step 2), heat accumulation element 4 is assemblied in the annular groove of base 1, and ensure the pumping fluid injection hole section on heat accumulation element 4
Align with the pumping fluid injection hole section on base 1；Afterwards cover plate 2 is assemblied on base 1, is welded and fixed；
Perimetrical lumen 3 described in step 3) needs to carry out vacuum leak hunting after being formed, when the leak rate of perimetrical lumen 3 is less than 0.5pa/hour
When, the sealing sexual satisfaction of this perimetrical lumen 3 requires.Otherwise, by being hunted leak to weld seam and repair method improves its sealing.
Step 4) carries out polish to grinding wheel base body, and its cylindrical and end face is machined to dimensional requirement；Afterwards again to weld seam
Carrying out secondary vacuum leak detection, pore carries out secondary repair welding if finding, subsequently adopting method for grinding to remove the unnecessary weldering of wheel face
Material；
Step 5) is electroplated using diamond or cubic boron nitride abrasive materials；
Step 6) is bondd being evacuated fluid injection connector 8 by coaxial requirement with seal plug 6 and is installed sealing ring 10, then close
Seal 10 applies a small amount of vacuseal grease with operation hole surface；Subsequently pumping fluid injection connector 8 is arranged in base 1 handle hole,
Ensure that the l type perforation on pumping fluid injection connector 8 is corresponding with 11 sections of pumping liquid injection hole on base 1 simultaneously；
Step 7) is bored a hole by l type and is evacuated liquid injection hole 11 and perimetrical lumen 3 carried out with evacuation and injection working medium 5, then slowly
Seal plug 6 is elapsed to the position substituting pumping fluid injection connector 8；Finally by seal plug 6 and vacuum pumping liquid injection connector
Depart from, complete emery wheel manufacture.
Finally it should be noted that: above example is only not intended to limit in order to technical scheme to be described；To the greatest extent
Pipe has been described in detail to the present invention with reference to preferred embodiment, and those of ordinary skill in the art are it is understood that still
The specific embodiment of the present invention can be modified or equivalent is carried out to some technical characteristics；Without deviating from this
The spirit of bright technical scheme, it all should be covered in the middle of the technical scheme scope that the present invention is claimed.
Claims (10)
1. a kind of green dry abrasive cutting phase-change thermal storage emery wheel, the abrasive material including grinding wheel base body with located at described grinding wheel base body outer end,
It is characterized in that: it is provided with perimetrical lumen in described grinding wheel base body at outer end, arrange in the inner matrix of described perimetrical lumen
One circle heat accumulation element, is provided with the working medium for liquid under room temperature, has connection institute in described grinding wheel base body in described perimetrical lumen
State perimetrical lumen and extraneous pumping liquid injection hole, the plugging device of setting closure described pumping liquid injection hole on described grinding wheel base body.
2. according to claim 1 green dry abrasive cutting phase-change thermal storage emery wheel it is characterised in that: described grinding wheel base body includes
Base and cover plate, described base arranges annular recess, and described heat accumulation element is arranged on the inner side of described annular recess, described lid
Plate and described tube chamber welds with base are fixed and are formed described perimetrical lumen.
3. according to claim 1 and 2 green dry abrasive cutting with phase-change thermal storage emery wheel it is characterised in that: described heat accumulation element
Outer face be in plane or wavy or cambered surface.
4. according to claim 3 green dry abrasive cutting phase-change thermal storage emery wheel it is characterised in that: described heat accumulation element be circle
The red copper of circulus or copper alloy, described heat accumulation element is arranged in the annular groove of described base by tight fit mode.
5. according to claim 4 green dry abrasive cutting with phase-change thermal storage emery wheel it is characterised in that: on described base vertically
Open up a handle hole, described pumping liquid injection hole sequentially passes through described heat accumulation element from described perimetrical lumen and described base is extremely described
Operation in the hole, described plugging device is seal plug, and described seal plug is arranged on described operation in the hole, described seal plug
Length and the deep equality of described handle hole.
6. according to claim 5 green dry abrasive cutting phase-change thermal storage emery wheel it is characterised in that: it also include be evacuated fluid injection
Connector, described handle hole is through hole, and the diameter of described pumping fluid injection connector is consistent with described seal plug, described pumping note
It is provided in liquid connector connecting described pumping liquid injection hole and the perforation of extraneous l type.
7. according to claim 6 green dry abrasive cutting with phase-change thermal storage emery wheel it is characterised in that: described pumping fluid injection connect
Part and described seal plug are all using the radial moving sealing structure with multigroup sealing ring and groove.
8. the green dry abrasive cutting according to any one of claim 5-7 with phase-change thermal storage emery wheel it is characterised in that: described operation
Hole size is φ 8-20mm, and surface roughness is less than ra0.8 μm, and described annular groove width is 35-70mm, described pumping note
The size of fluid apertures is φ 1-2mm.
9. according to claim 8 green dry abrasive cutting with phase-change thermal storage emery wheel it is characterised in that: the ring of described heat accumulation element
Shape partial width is 15-40mm；The outer face of described heat accumulation element is plane or wavy or cambered surface and described outer face warp
Cross bead.
10. the green dry abrasive cutting described in any one of manufacturing claims 1-9 with the method for phase-change thermal storage emery wheel it is characterised in that:
Comprise the following steps:
Step 1), make base, cover plate, heat accumulation element, pumping fluid injection connector and seal plug according to design size；
Step 2), heat accumulation element is assemblied in the annular groove of base, and ensure pumping fluid injection hole section on heat accumulation element with
Pumping fluid injection hole section alignment on base；Afterwards cover plate is assemblied on base, is welded and fixed；
Step 3), vacuum leak hunting is carried out to weld seam, pore carries out repair welding if finding；
Step 4), polish is carried out to grinding wheel base body, again secondary vacuum leak detection is carried out to weld seam afterwards, pore carries out two if finding
Secondary repair welding；
Step 5), electroplated using diamond or cubic boron nitride abrasive materials；
Step 6), by pumping fluid injection connector bondd by coaxial requirement with seal plug and sealing ring be installed；By pumping note
Liquid connector is arranged on the operation in the hole of base, ensures the pumping on the perforation of l type and the base on pumping fluid injection connector simultaneously
Fluid injection hole section corresponds to；
Step 7), bored a hole by l type and be evacuated liquid injection hole perimetrical lumen is carried out evacuation and injection working medium, then by seal plug
Head elapses to the position substituting pumping fluid injection connector, then seal plug is departed from vacuum pumping liquid injection connector, completes emery wheel
Manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865211.0A CN106346377B (en) | 2016-09-30 | 2016-09-30 | Green dry abrasive cutting phase-change thermal storage grinding wheel and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865211.0A CN106346377B (en) | 2016-09-30 | 2016-09-30 | Green dry abrasive cutting phase-change thermal storage grinding wheel and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106346377A true CN106346377A (en) | 2017-01-25 |
| CN106346377B CN106346377B (en) | 2019-01-18 |
Family
ID=57867170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610865211.0A Active CN106346377B (en) | 2016-09-30 | 2016-09-30 | Green dry abrasive cutting phase-change thermal storage grinding wheel and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106346377B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109571292A (en) * | 2018-12-29 | 2019-04-05 | 河南工业大学 | A kind of novel high thermal conductivity phase-change thermal storage super-abrasive grinding wheel and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0760648A (en) * | 1993-08-24 | 1995-03-07 | Matsushita Electric Ind Co Ltd | Precision grinding cutting grinding wheel |
| CN101157205A (en) * | 2007-11-15 | 2008-04-09 | 南京航空航天大学 | Braze welding diamond heattube abrasive wheel |
| CN202540148U (en) * | 2012-05-05 | 2012-11-21 | 山东大学 | Heat pipe sucker for accelerating heat transfer of abrasive machining on thin-walled workpiece |
| CN103128676B (en) * | 2013-02-26 | 2015-07-01 | 南京航空航天大学 | Heat pipe grinding wheel for dry cutting for difficult-to-machined materials and method for manufacturing heat pipe grinding wheel |
-
2016
- 2016-09-30 CN CN201610865211.0A patent/CN106346377B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0760648A (en) * | 1993-08-24 | 1995-03-07 | Matsushita Electric Ind Co Ltd | Precision grinding cutting grinding wheel |
| CN101157205A (en) * | 2007-11-15 | 2008-04-09 | 南京航空航天大学 | Braze welding diamond heattube abrasive wheel |
| CN202540148U (en) * | 2012-05-05 | 2012-11-21 | 山东大学 | Heat pipe sucker for accelerating heat transfer of abrasive machining on thin-walled workpiece |
| CN103128676B (en) * | 2013-02-26 | 2015-07-01 | 南京航空航天大学 | Heat pipe grinding wheel for dry cutting for difficult-to-machined materials and method for manufacturing heat pipe grinding wheel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109571292A (en) * | 2018-12-29 | 2019-04-05 | 河南工业大学 | A kind of novel high thermal conductivity phase-change thermal storage super-abrasive grinding wheel and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106346377B (en) | 2019-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103128676B (en) | Heat pipe grinding wheel for dry cutting for difficult-to-machined materials and method for manufacturing heat pipe grinding wheel | |
| CN102331203B (en) | Heat pipe applied to brake pad and production method thereof | |
| CN104526587B (en) | Heat pipe grinding wheel and installation method for form grinding | |
| CN113319337B (en) | Medium circulation heat dissipation milling system based on inside and outside cold intelligence switches | |
| CN105290950A (en) | Rounding method for turbine guide vane film hole opening | |
| CN203978827U (en) | A kind of Roots pump of good cooling results | |
| CN100446929C (en) | Heat pipe type superhard abrasive material grinding tool | |
| CN106346377A (en) | Green phase change and heat storage grinding wheel for dry abrasive cutting and manufacturing method thereof | |
| CN203627875U (en) | Ball valve with all-welded valve body | |
| CN203062532U (en) | Integral rotating heat pipe grinding tool | |
| CN219598332U (en) | Thermal uniformity management device of vacuum eutectic soldering furnace | |
| CN111283561B (en) | Integral type axial rotation oscillation heat pipe grinding wheel and manufacturing method thereof | |
| CN109571292B (en) | Novel high-thermal-conductivity phase-change heat-storage superhard abrasive grinding wheel and preparation method thereof | |
| CN105773456A (en) | Oscillating heat pipe segmented block grinding wheel and manufacturing method thereof | |
| CN206544203U (en) | A kind of rotating device of inside diameter slicer | |
| CN210388782U (en) | Grinding equipment for ceramic machining | |
| CN102673121A (en) | Rotary heating pipe cooling type ink-pumping roll | |
| CN205363603U (en) | Polisher of circulation cooling | |
| CN206982290U (en) | One kind aims at engraving cutter cooling watering bull device | |
| CN103737501A (en) | Grinding-burn-preventing grinding wheel | |
| CN202119146U (en) | Oval solar heat collecting pipe | |
| CN205725285U (en) | The support of driving motor for electric automobile | |
| CN103072075A (en) | Detachable rotary heat pipe grinding tool | |
| CN219654974U (en) | High-temperature pump applied to coated asphalt | |
| CN102853569B (en) | Ellipse solar energy heat collection pipe and manufacture method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |