CN110076581A - A kind of tapping method after heat treatment Surface hardened layer - Google Patents
A kind of tapping method after heat treatment Surface hardened layer Download PDFInfo
- Publication number
- CN110076581A CN110076581A CN201910466074.7A CN201910466074A CN110076581A CN 110076581 A CN110076581 A CN 110076581A CN 201910466074 A CN201910466074 A CN 201910466074A CN 110076581 A CN110076581 A CN 110076581A
- Authority
- CN
- China
- Prior art keywords
- screw thread
- heat treatment
- internal screw
- workpiece
- bottom outlet
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P25/00—Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress
Abstract
The present invention relates to the tapping methods of workpiece after a kind of heat treatment Surface hardened layer that one kind can either carry out secondary tapping (tapping) to internal screw thread bottom outlet after workpiece surface cure process, the surface of internal screw thread bottom outlet has carried out heat treatment hardening on workpiece, it is characterized in that: the workpiece after heat treatment Surface hardened layer is fixed, the workpiece of internal screw thread bottom outlet is face-up, it is heated with flame gun alignment internal screw thread bottom outlet, when the softening of the METAL HEATING PROCESS of internal thread lower bore portion, carrying out tapping using spiral tap internal threads bottom outlet rapidly can be obtained required internal screw thread.Advantage: first is that it is good to reprocess effect: the method is to carry out tapping again using spiral tap rapidly after heating by making metal softening to thread Pilot hole local heating；Second is that at low cost: the method can preferably repair the screw thread of leakage processing, avoid feeding intake again, reduce development cost；Third is that the phase of friendship is fast again: can quickly repair, have substantially no effect on the friendship phase of exploitation, avoid coming once to influence sample handing over the phase.
Description
Technical field
Secondary tapping can either be carried out to internal screw thread bottom outlet after workpiece surface cure process the present invention relates to one kind (attack spiral shell
Line) a kind of heat treatment Surface hardened layer after workpiece tapping method.
Background technique
In New Product Development Process, frequently encountering shaft end has internal screw thread, but tends to occur in a manufacturing process only spiral shell
Line bottom outlet is carried out and the phenomenon that missed tapping.Especially the worm tooth wheel shaft class development cycle is long, is heat-treated rear surface hardness in HRC60
Left and right, feeds intake, and delivery date is caused to be delayed again once missed tapping can only be scrapped.
Summary of the invention
Purpose of design: avoiding the shortcoming in background technique, and designing one kind can either realize at workpiece surface hardening
The secondary tapping of internal screw thread bottom outlet is completed after reason, and there is processing technology to be simply heat-treated the tapping side after Surface hardened layer
Method.
Design scheme: in order to realize above-mentioned purpose of design.The present invention is in technological design, using the side of local heating annealing
Method carries out local heating in HRC60 or so thread Pilot hole to heat treatment rear surface hardness, keeps thread Pilot hole inner hole local softening same
When, tapping again is quickly carried out using spiral tap 5, it is good by practical effect.
Technical solution: a kind of tapping method after heat treatment Surface hardened layer, the surface of internal screw thread bottom outlet carries out on workpiece
Heat treatment hardening will be heat-treated the workpiece after Surface hardened layer and fix, and the workpiece of internal screw thread bottom outlet is face-up, with flame gun pair
Quasi- internal screw thread bottom outlet is heated, and when the softening of the METAL HEATING PROCESS of internal thread lower bore portion, uses spiral tap internal threads rapidly
Bottom outlet, which carries out tapping, can be obtained required internal screw thread.
Compared with the background technology, the present invention, first is that reprocess effect good: the method is by making to thread Pilot hole local heating
Metal softening carries out tapping again using spiral tap rapidly after heating；Second is that at low cost: the method can preferably repair leakage and add
The screw thread of work avoids feeding intake again, reduces development cost；Third is that the phase of friendship is fast: can quickly repair, have substantially no effect on the friendship of exploitation
Phase avoids coming once to influence sample again handing over the phase, brings unexpected technical effect, economic effect and social effect.
Detailed description of the invention
Fig. 1 is the schematic diagram that axial end is provided with internal screw thread bottom outlet.
Fig. 2 is that the schematic diagram that internal screw thread bottom outlet heats in Fig. 1 is directed at using flame gun.
Fig. 3 is using spiral tap to the internal screw thread bottom outlet after heating in Fig. 2 again tapping schematic diagram.
Fig. 4 is the schematic diagram after secondary tapping.
Specific embodiment
Embodiment 1: referring to attached drawing 1-4.A kind of tapping method after heat treatment Surface hardened layer, internal screw thread bottom outlet on workpiece
Surface carried out heat treatment hardening, hardness is on the left side HRC60 after the surface of internal screw thread bottom outlet has carried out heat treatment hardening on workpiece
It is right.Workpiece after heat treatment Surface hardened layer is fixed, the workpiece of internal screw thread bottom outlet is face-up, internal screw thread bottom is directed at flame gun
Hole is heated, and when the softening of the METAL HEATING PROCESS of internal thread lower bore portion, is attacked using spiral tap internal threads bottom outlet rapidly
Required internal screw thread can be obtained in tooth.The flame temperature control of flame gun is in 1800-3000 degree, and heating time control is according to heating temperature
Degree selects between 20 seconds -40 seconds, i.e. hardness of hardness of heat treatment hardening internal screw thread bottom outlet after heating less than spiral tap
For reference standard.
Need to illustrate: Fig. 1-Fig. 4 picture in Detailed description of the invention be in order to cooperate the description of the invention and attached, if
Can only understand by text if illustrating the present invention, can should not Fig. 1-Fig. 4, or change Fig. 1-Fig. 4 into mechanical drawing.
It should be understood that being: although above-described embodiment has made detailed verbal description to mentality of designing of the present invention,
The description of these texts only describes the simple text of mentality of designing of the present invention, rather than to the limit of mentality of designing of the present invention
System, any combination, increase or modification without departing from mentality of designing of the present invention are fallen within the protection scope of the present invention.
Claims (3)
1. a kind of tapping method after heat treatment Surface hardened layer, it is hard to have carried out heat treatment for the surface of internal screw thread bottom outlet on workpiece
Change, it is characterized in that: the workpiece after heat treatment Surface hardened layer is fixed, the workpiece of internal screw thread bottom outlet is face-up, with flame gun pair
Quasi- internal screw thread bottom outlet is heated, and when the softening of the METAL HEATING PROCESS of internal thread lower bore portion, uses spiral tap internal threads rapidly
Bottom outlet, which carries out tapping, can be obtained required internal screw thread.
2. the tapping method after heat treatment Surface hardened layer according to claim 1, it is characterized in that: internal screw thread bottom on workpiece
Hardness is in HRC60 or so after the surface in hole has carried out heat treatment hardening.
3. the tapping method after heat treatment Surface hardened layer according to claim 1, it is characterized in that: the flame temperature of flame gun
Degree control controls between 20 seconds -40 seconds in 1800-3000 degree, heating time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910466074.7A CN110076581A (en) | 2019-05-31 | 2019-05-31 | A kind of tapping method after heat treatment Surface hardened layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910466074.7A CN110076581A (en) | 2019-05-31 | 2019-05-31 | A kind of tapping method after heat treatment Surface hardened layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110076581A true CN110076581A (en) | 2019-08-02 |
Family
ID=67422842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910466074.7A Pending CN110076581A (en) | 2019-05-31 | 2019-05-31 | A kind of tapping method after heat treatment Surface hardened layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110076581A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324278A (en) * | 1998-09-04 | 2001-11-28 | 联结技术两合公司 | Light alloy thread-forming screw and its prodn. method |
| CN102146504A (en) * | 2011-03-14 | 2011-08-10 | 中国科学院力学研究所 | Local thermal aging and vibration-assisted local thermal aging method |
| CN202705406U (en) * | 2012-07-23 | 2013-01-30 | 太仓市旭冉机械有限公司 | Local heat treatment processing device |
| CN204058536U (en) * | 2014-05-15 | 2014-12-31 | 昆明理工大学 | A kind of subsized specimen partial heat treatment device |
| CN204412861U (en) * | 2015-01-19 | 2015-06-24 | 明宝臣 | Deep thread heat exchanger tube process equipment |
-
2019
- 2019-05-31 CN CN201910466074.7A patent/CN110076581A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324278A (en) * | 1998-09-04 | 2001-11-28 | 联结技术两合公司 | Light alloy thread-forming screw and its prodn. method |
| CN102146504A (en) * | 2011-03-14 | 2011-08-10 | 中国科学院力学研究所 | Local thermal aging and vibration-assisted local thermal aging method |
| CN202705406U (en) * | 2012-07-23 | 2013-01-30 | 太仓市旭冉机械有限公司 | Local heat treatment processing device |
| CN204058536U (en) * | 2014-05-15 | 2014-12-31 | 昆明理工大学 | A kind of subsized specimen partial heat treatment device |
| CN204412861U (en) * | 2015-01-19 | 2015-06-24 | 明宝臣 | Deep thread heat exchanger tube process equipment |
Non-Patent Citations (1)
| Title |
|---|
| 段宝等: "钛合金单面螺纹抽打内螺纹热攻丝", 《机械设计与制造》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105200201B (en) | A kind of carbo-nitriding heat-treating methods for screw | |
| CN102482725A (en) | Method And Device For Energy-efficient Hot Forming | |
| JP6211366B2 (en) | Heat treatment method for ring member and heat treatment equipment for ring member | |
| CN101474647B (en) | Hot extrusion technological process for three-way from X80 grade steel plate | |
| US20140010590A1 (en) | Thermal treated reinforcing bar splice and method | |
| CN103765145A (en) | Method for heating shaped component for subsequent press hardening operation and continuous furnace for regionally heating shaped component preheated to predetermined temperature to higher temperature | |
| CN103233165A (en) | High-pressure valve material and heat treatment method thereof | |
| CN105689969A (en) | Guide post processing technology | |
| CN102925835A (en) | High-temperature alloy stress-removing aging process method | |
| CN110076581A (en) | A kind of tapping method after heat treatment Surface hardened layer | |
| CN105755239A (en) | Method for improving low-temperature impact toughness of large-diameter large-wall-thickness high-strength hot-bent pipe | |
| CN105002346A (en) | Hot air circulating system of tempering furnace | |
| JP5740698B2 (en) | Dehydrogenation treatment method for plated parts | |
| CN102121785A (en) | Flame furnace for processing bamboos and method for processing bamboo by using same | |
| CN107779583A (en) | Seamless steel pipe Technology for Heating Processing | |
| CN104294021B (en) | A kind of two phase stainless steel forging molding process | |
| Rudnev et al. | Intricacies for the successful induction heating of steels in modern forge shops | |
| CN105755407A (en) | Correction method for deformation of aluminum alloy processing piece | |
| CN105170869A (en) | Forging method capable of improving transverse mechanical property of 17-4PH forge pieces | |
| CN103464965B (en) | The renovation technique of furnace roller | |
| CN105463163A (en) | Method for improving breaking tenacity of direct laser deposited and formed A-100 steel and A-100 steel | |
| CN100434541C (en) | Annealing process of 20CrMnTi steel for cold extrusion | |
| CN104141095A (en) | High pressure common rail forged piece of engine | |
| CN104032121A (en) | Steel bar heat treatment method | |
| RU2629127C1 (en) | Welded joint induction heat treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190802 |
|
| RJ01 | Rejection of invention patent application after publication |