CN113523469A - Vacuum welding process for machining cutter - Google Patents
Vacuum welding process for machining cutter Download PDFInfo
- Publication number
- CN113523469A CN113523469A CN202110661992.2A CN202110661992A CN113523469A CN 113523469 A CN113523469 A CN 113523469A CN 202110661992 A CN202110661992 A CN 202110661992A CN 113523469 A CN113523469 A CN 113523469A
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- CN
- China
- Prior art keywords
- blade
- temperature
- machining
- welding
- welding process
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 title claims abstract description 16
- 238000003754 machining Methods 0.000 title claims abstract description 15
- 230000004907 flux Effects 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 7
- 229910000679 solder Inorganic materials 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 238000005219 brazing Methods 0.000 description 8
- 238000005476 soldering Methods 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- GJNGXPDXRVXSEH-UHFFFAOYSA-N 4-chlorobenzonitrile Chemical compound ClC1=CC=C(C#N)C=C1 GJNGXPDXRVXSEH-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
- B23K1/206—Cleaning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
One or more embodiments of the present disclosure provide a vacuum welding process for machining a tool, including the following steps: preparing a blade and a blade holder, wherein the blade holder is provided with an installation position matched with the blade, and the blade holder and the blade are cleaned and dried; step two: installing the blade in an installation position of the tool apron, and pre-bonding the blade and the tool apron by using a welding flux; step three: placing the blade in a vacuum furnace, vacuumizing a welding environment, heating in a three-section mode, and preserving heat; step four: stopping heating until the temperature is naturally cooled to below 100 ℃, and taking out; according to the invention, the cutter is subjected to vacuum welding by three-stage heating, so that the welding flux can be fully melted and infiltrated into a gap between the cutter and the cutter holder during welding, and the situations of holes and insufficient welding during vacuum welding are reduced.
Description
Technical Field
One or more embodiments of the present disclosure relate to the field of tool machining technology, and more particularly, to a vacuum welding process for tool machining.
Background
The carbide tool is an important processing tool for processing metal parts, the structure of the carbide tool comprises a blade and a tool body, in order to ensure that the sharpness, namely hardness, required by cutting of the tool is met, and the toughness, namely toughness, required by resisting stress generated by cutting is achieved, the blade and the tool body need to be made of different metal materials, otherwise, the problem of edge breakage or incapability of cutting can be caused because one metal material cannot reach a balance between hardness and toughness.
Therefore, the most indispensable processing technology in the process of forming the two alloy materials with different properties into a complete alloy cutter is welding, and the two parts are tightly connected into a whole by using the solder, so that the requirements on hardness and toughness can be met;
however, in actual operation, PCD and PCBN cutters are composed of a composite layer and an alloy layer, and have different material characteristics and different shrinkage coefficients after heating, which easily cause cracking, delamination and bulging of the material, further cause the conditions of voids and insufficient solder joints, and seriously affect the welding quality.
Disclosure of Invention
In view of the above, it is an object of one or more embodiments of the present disclosure to provide a vacuum welding process for machining a tool, which solves one or all of the above-mentioned problems.
In view of the above, one or more embodiments of the present disclosure provide a vacuum welding process for machining a tool, including the following steps:
the method comprises the following steps: preparing a blade and a blade holder, wherein the blade holder is provided with an installation position matched with the blade, and the blade holder and the blade are cleaned and dried;
step two: installing the blade in an installation position of the tool apron, and pre-bonding the blade and the tool apron by using a welding flux;
step three: placing the blade in a vacuum furnace, vacuumizing a welding environment, heating in a three-section mode, and preserving heat;
step four: stopping heating until the temperature is naturally cooled to below 100 ℃, and taking out.
Optionally, the three-stage heating includes:
in the first stage, the temperature is raised from room temperature to 400-;
in the second stage, the temperature is increased from 480 ℃ of 400-;
in the third stage, the temperature is raised from 600 ℃ to 610 ℃ to 820 ℃ at the temperature raising speed of 45-50 ℃/min, and the temperature is kept for 5-8 min.
Optionally, in the third step, the welding environment is vacuumized, and the vacuum degree is 75000 Pa.
Optionally, the solder is any one of manganese-based brazing flux, aluminum-based brazing flux, chromium-based brazing flux and copper-based brazing flux.
Optionally, the pre-connection in the second step is performed by coating glue or solder paste on the contact surface between the mounting position and the blade.
Optionally, the solder paste consists of lead-free solder powder and soldering flux, wherein the weight percentage of the lead-free solder powder is 85% -90%, and the weight percentage of the soldering flux is 10% -15%.
As can be seen from the above, in the vacuum welding process for machining a tool, provided in one or more embodiments of the present disclosure, the tool is vacuum-welded by three stages of heating, so that solder or soldering paste can sufficiently penetrate into a gap between the tool and the tool holder during welding, thereby reducing the occurrence of voids and cold joints during vacuum welding.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.
It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The first embodiment is as follows:
a vacuum welding process for machining a cutter comprises the following steps:
the method comprises the following steps: preparing a blade and a blade holder, wherein the blade holder is provided with an installation position matched with the blade, and the blade holder and the blade are cleaned and dried;
step two: coating solder on the contact surface of the mounting position and the blade, and mounting the blade in the mounting position of the tool apron;
step three: placing the blade in a vacuum furnace, vacuumizing a welding environment, and heating in three sections, wherein in the first section, the temperature is increased from room temperature to 480 ℃, the temperature increase speed is 30 ℃/min, and the temperature is kept for 18 min; in the second stage, the temperature is increased from 480 ℃ to 610 ℃, the temperature increasing speed is 50 ℃/min, and the temperature is kept for 10 min;
in the third stage, the temperature is increased from 610 ℃ to 820 ℃, the temperature increasing speed is 45 ℃/min, and the temperature is kept for 5 min;
step four: stopping heating until the temperature is naturally cooled to below 100 ℃, and taking out;
vacuumizing the welding environment in the third step, wherein the vacuum degree is 75000 Pa;
the solder is any one of manganese-based brazing flux, aluminum-based brazing flux, chromium-based brazing flux and copper-based brazing flux.
The soldering paste consists of lead-free solder powder and soldering flux, wherein the weight percentage of the lead-free solder powder is 85-90%, and the weight percentage of the soldering flux is 10-15%.
Example two:
the parameters of three-stage heating in the third step are as follows:
in the first stage, the temperature is increased from room temperature to 450 ℃, the temperature rising speed is 60 ℃/min, and the temperature is kept for 10 min; in the second stage, the temperature is increased from 450 ℃ to 600 ℃, the temperature increasing speed is 50 ℃/min, and the temperature is kept for 2 min; in the third stage, the temperature is raised from 600 ℃ to 780 ℃, the temperature raising speed is 45 ℃/min, and the temperature is kept for 5 min.
Example three:
the parameters of three-stage heating in the third step are as follows:
in the first stage, the temperature is increased from room temperature to 400 ℃, the temperature rising speed is 30 ℃/min, and the temperature is kept for 18 min; in the second stage, the temperature is increased from 400 ℃ to 600 ℃, the temperature increasing speed is 40 ℃/min, and the temperature is kept for 2 min; in the third stage, the temperature is raised from 600 ℃ to 750 ℃, the temperature raising speed is 45 ℃/min, and the temperature is kept for 5 min.
Example four:
the parameters of three-stage heating in the third step are as follows:
in the first stage, the temperature is increased from room temperature to 400 ℃, the temperature rising speed is 30 ℃/min, and the temperature is kept for 18 min; in the second stage, the temperature is increased from 400 ℃ to 600 ℃, the temperature increasing speed is 40 ℃/min, and the temperature is kept for 5 min; in the third stage, the temperature is raised from 600 ℃ to 650 ℃, the temperature raising speed is 45 ℃/min, and the temperature is kept for 8 min.
Example five:
the parameters of three-stage heating in the third step are as follows:
in the first stage, the temperature is increased from room temperature to 400 ℃, the temperature rising speed is 30 ℃/min, and the temperature is kept for 18 min; in the second stage, the temperature is increased from 400 ℃ to 600 ℃, the temperature increasing speed is 40 ℃/min, and the temperature is kept for 5 min; in the third stage, the temperature is raised from 600 ℃ to 735 ℃, the temperature raising speed is 45 ℃/min, and the temperature is kept for 5 min.
According to the invention, the cutter is subjected to vacuum welding by three-stage heating, so that solder or soldering paste can fully penetrate into a gap between the cutter and the cutter holder during welding, and further the conditions of holes and false welding during vacuum welding are reduced, and through data statistics, the defect rate of the cutter manufactured by the process is reduced by 15-30%.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.
It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (6)
1. A vacuum welding process for machining a cutter is characterized by comprising the following steps:
the method comprises the following steps: preparing a blade and a blade holder, wherein the blade holder is provided with an installation position matched with the blade, and the blade holder and the blade are cleaned and dried;
step two: installing the blade in the installation position of the cutter holder, and pre-connecting the blade and the cutter holder;
step three: placing solder at the boundary line between the blade and the blade, vacuumizing the welding environment, heating in three sections, and preserving heat;
step four: stopping heating until the temperature is naturally cooled to below 100 ℃, and taking out.
2. The vacuum welding process for machining the cutter according to claim 1, wherein the three-stage heating includes:
in the first stage, the temperature is raised from room temperature to 400-;
in the second stage, the temperature is increased from 480 ℃ of 400-;
in the third stage, the temperature is raised from 600 ℃ to 610 ℃ to 820 ℃ at the temperature raising speed of 45-50 ℃/min, and the temperature is kept for 5-8 min.
3. The vacuum welding process for machining a tool according to claim 1, wherein the welding environment is evacuated in step three to a vacuum of 75000 Pa.
4. The vacuum welding process for tool machining according to claim 1, wherein the solder is any one of manganese-based flux, aluminum-based flux, chromium-based flux, and copper-based flux.
5. The vacuum welding process for machining a tool according to claim 1, wherein the pre-joining in the second step is performed by applying glue or solder paste to the contact surface of the mounting portion and the blade.
6. The vacuum welding process for machining a tool according to claim 5, wherein the solder paste is composed of lead-free solder powder and flux, the weight ratio of the lead-free solder powder is 85% -90%, and the weight ratio of the flux is 10% -15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110661992.2A CN113523469A (en) | 2021-06-15 | 2021-06-15 | Vacuum welding process for machining cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110661992.2A CN113523469A (en) | 2021-06-15 | 2021-06-15 | Vacuum welding process for machining cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113523469A true CN113523469A (en) | 2021-10-22 |
Family
ID=78124930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110661992.2A Pending CN113523469A (en) | 2021-06-15 | 2021-06-15 | Vacuum welding process for machining cutter |
Country Status (1)
| Country | Link |
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| CN (1) | CN113523469A (en) |
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