CN108677134A - A kind of carbo-nitriding method of waist wheel - Google Patents
A kind of carbo-nitriding method of waist wheel Download PDFInfo
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- CN108677134A CN108677134A CN201810608476.1A CN201810608476A CN108677134A CN 108677134 A CN108677134 A CN 108677134A CN 201810608476 A CN201810608476 A CN 201810608476A CN 108677134 A CN108677134 A CN 108677134A
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- hot stove
- waist wheel
- spherical
- degrees celsius
- spherical hot
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
- C23C8/30—Carbo-nitriding
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The invention discloses a kind of carbo-nitriding methods of waist wheel, carry out according to the following steps, first clean waist wheel with 12%~15% dilute hydrochloric acid；Waist wheel is contained using spherical hot stove, it include the mandril that several rows are mutually parallel on each mounting bracket, each mandril coaxial spaced arrangement, and blind hole there are one being opened on adjacent two mandril end face, spring is housed in blind hole, after waist wheel is all installed, spherical hot stove is preheated to 200 degrees Celsius, it is preheated to 200 degrees Celsius and is kept for 20 minutes at a temperature of no more than 250 degrees Celsius, after preheating 20 minutes, spherical hot stove is transferred to temperature to have risen to hanging in 400 degrees Celsius of burner hearth and continue to be heated to 660~685 degrees Celsius, it is 2~3.5m/s that spherical hot stove heats the wind speed finished when ensureing ventilation later in burner hearth, rotor is taken out after cooling one by one, it puts the oil, joint sealing is stored.The carbo-nitriding method of the waist wheel is good to the thermal effectiveness of waist wheel, and the hardness and strength after reinforcing are obtained for great raising.
Description
Technical field
The invention belongs to waist wheel technical field of heat treatment more particularly to a kind of carbonitriding technologies of waist wheel.
Background technology
Rotz flowmeter is the high-precision measuring instrument for accomplished continuously or intermittently being measured flow in pipeline.It has
Precision height, good reliability, light-weight, long lifespan, it is easy to install and use the features such as, be the typical case of volumetric flowmeter, core
Component is a pair of intermeshing waist wheel in 8-shaped, as core component, for waist wheel processing when carbo-nitriding work
Sequence is different from the requirement of general carbonitriding technology naturally, therefore general carbonitriding technology seems pole to the intensive treatment of waist wheel
It is insufficient, it would be highly desirable to improve.
Invention content
It is an object of the invention to solve above-mentioned technical problem, a kind of carbo-nitriding method of waist wheel is provided, the waist wheel
Carbo-nitriding method is good to the thermal effectiveness of waist wheel, and the hardness and strength after reinforcing are obtained for great raising.
Technical scheme is as follows：
A kind of carbo-nitriding method of waist wheel, carries out according to the following steps,
(1) first waist wheel is cleaned with 12%~15% dilute hydrochloric acid, removes dregs, is dried for standby；
(2) waist wheel is contained using spherical hot stove, if being provided with the mounting bracket that dried layer is mutually parallel in spherical hot stove, each
Include the mandril that several rows are mutually parallel on mounting bracket, each mandril coaxial spaced arrangement, and in adjacent two mandril end face
On open there are one blind hole, spring is housed in blind hole, the both ends of the shaft of waist wheel are inserted into respectively in two blind holes and in bullet
It is mounted between adjacent two mandril under the pressure of spring；Spherical hot stove is mounted on rotating machinery, makes spherical hot stove can be with
Rotation；
(3) after all installing waist wheel, spherical hot stove is preheated to 200 degrees Celsius, the preheating of the process uses mineral
Type conduction oil is preheated to 200 degrees Celsius and is kept for 20 minutes at a temperature of no more than 250 degrees Celsius, and spherical shape hot stove exists when preheating
It is loaded with submergence in the vessel of conduction oil and is rotated with the speed of 35~40r/min；
(4) it after preheating 20 minutes, spherical hot stove is removed and is placed on steelframe drains 5 minutes, then by spherical hot stove
It is transferred to temperature to have risen to hanging in 400 degrees Celsius of burner hearth and continue to be heated to 660~685 degrees Celsius, and in the temperature
Kept for 15 minutes under degree or more, the speed rotation spherical hot stove with 50~55r/min is needed in entire heating process；Burner hearth exists
It to be passed through a certain amount of carbon source and nitrogen source in advance before being put into spherical hot stove, and ensures that carbon source and nitrogen source are under 400 degrees Celsius
Duration is no less than 10 minutes；
(5) spherical hot stove heats in burner hearth finishes rapid removal later, is placed at ventilation and heat and cools down, and ensures to divulge information
When wind speed be 2~3.5m/s, take out rotor one by one after cooling, put the oil, joint sealing storage.
Further, it is 60~80 DEG C to remove the temperature dried after dregs.
Further, all waist wheels gradually become smaller in spherical hot stove by sequence arrangement density from outside to inside, and adjacent
Gap between two waist wheels is not less than 20cm, but is not more than 30cm.
Further, the carbon source amount that burner hearth is passed through in advance before being put into spherical hot stove accounts for the 1/3 of all carbon source amounts, logical in advance
The nitrogen source amount entered accounts for the 1/2 of all nitrogen source amounts, and remaining carbon source and nitrogen source are together passed through after being put into spherical hot stove.
Further, spherical hot stove heats in burner hearth finish removal after, divulged information by the way of two reversed wind regimes, two
Wind regime air-out direction is oppositely arranged, and spherical hot stove is then positioned at two wind regimes between, and the difference of the wind speed of two wind regimes is 2.5~3.5m/
s。
Further, rotation of the spherical hot stove in each stage is dynamic around the shaft rotation of itself a certain diameter.
Beneficial effects of the present invention：Using carbonitriding technology provided by the present invention, waist wheel can be carried out relatively to stablize
Surface heat-treatent so that waist wheel surface has higher hardness, so as to adapt to its long-term engagement rotation may caused by squeeze
Friction, meanwhile, greatly enhancing the intensity of waist wheel so that waist wheel can more resist fluid impact without damaging for a long time, and fatigue strength is high,
Long lifespan.
Description of the drawings
Fig. 1 is the arrangement schematic diagram of one layer of waist wheel in spherical hot stove.
Fig. 2 is scheme of installation of the waist wheel between two mandrils.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
With reference to embodiment, the invention will be further described：
A kind of carbo-nitriding method of waist wheel, carries out according to the following steps,
(1) first waist wheel is cleaned with 12%~15% dilute hydrochloric acid, removes dregs, is dried for standby, is in cleaning otherwise stops
Roll rotor on ground, is that rotor comes into full contact with dilute hydrochloric acid solution, it may be necessary to vessel of the oscillation equipped with dilute hydrochloric acid.
(2) waist wheel is contained using spherical hot stove, that is, uses a spherical closing iron stove to fill waist wheel, why uses ball
Shape is because ball contact area is big, and contact is uniform everywhere, can be located at the centre of thermal, surface arrive everywhere surrounding away from
Consistent from that can accomplish as possible, it is spliced that this spherical iron stove can be used two halves, and flanged plate spiral shell is used between two halves furnace shell
It tethers and connects, convenient for assembly and disassembly.If being provided with the mounting bracket that dried layer is mutually parallel in spherical hot stove, as shown in Fig. 1-2, every layer of peace
It includes mandril 1 that several rows are mutually parallel to shelve, and often goes and is arranged by 1 coaxial spaced of multiple mandrils, gap is for waist wheel
The erections of semi-finished articles 2 is installed, and opens on adjacent two mandrils, 1 end face that there are one blind holes, and spring 4 is housed in blind hole, will
The both ends of the shaft 3 of waist wheel are inserted into two blind holes and are mounted between adjacent two mandril 1 under the pressure of spring 4 respectively,
This mode is convenient for the Fast Installation to waist wheel.Spherical hot stove is mounted on a rotating machinery, and spherical hot stove is allow to rotate,
This rotating machinery can be that motor drives, and can also be other existing equipments.
(3) after all installing waist wheel, spherical hot stove is preheated to 200 degrees Celsius, the preheating of the process uses mineral
Type conduction oil is preheated to 200 degrees Celsius and is kept for 20 minutes at a temperature of no more than 250 degrees Celsius so that waist wheel is by preliminary pre-
Heat, avoids abruptly entering and generates damage after hot environment, and spherical shape hot stove submerges simultaneously in the vessel for being loaded with conduction oil when preheating
It is rotated with the speed of 35~40r/min so that spherical hot stove thermally equivalent, heating are rapid so that all waist wheels are as possible reasonable
It is excessive without generating partial deviations in temperature range.
(4) it after preheating 20 minutes, spherical hot stove is removed and is placed on steelframe drains 5 minutes so that the mineral of adherency
Oil can freely converge in spherical hot stove bottom, remove together, spherical hot stove is then transferred to temperature has risen to 400 and take the photograph
It is hanging and continue to be heated to 660~685 degrees Celsius in the burner hearth of family name's degree, it can be used when hanging the both ends of spherical hot stove are solid respectively
Surely a shaft is welded, two shafts are stretched out after running through burner hearth sidewall except burner hearth, and wherein one end is connected to the motor.Spherical hot stove
It is kept for 15 minutes or more under 660~685 degree celsius temperatures, wherein effect when with 653 degrees Celsius is best, entire heated
The speed rotation spherical hot stove with 50~55r/min is needed in journey, wherein best with the speed rotating effect of 51r/min.Burner hearth
It to be passed through a certain amount of carbon source and nitrogen source in advance before being put into spherical hot stove, produce enough carbon atmosphere and nitrogen atmosphere, and ensure carbon
The duration that source and nitrogen source are under 400 degrees Celsius is no less than 10 minutes.
(5) spherical hot stove heats in burner hearth finishes rapid removal later, is placed at ventilation and heat and cools down, and ensures to divulge information
When wind speed be 2~3.5m/s, take out rotor one by one after cooling, put the oil, joint sealing storage.
Further, the temperature dried is 60~80 DEG C after removing dregs, good drying effect and will not make waist at this temperature
Wheel surface and air catalytic oxidation.
Further, all waist wheels gradually become smaller in spherical hot stove by sequence arrangement density from outside to inside, and adjacent
Gap between two waist wheels is not less than 20cm, but is not more than 30cm, this is because spherical hot stove internal temperature is slightly low, therefore sets
The waist wheel quantity set will be lacked, it is ensured that evenly heat.
Further, the carbon source amount that burner hearth is passed through in advance before being put into spherical hot stove accounts for the 1/3 of all carbon source amounts, logical in advance
The nitrogen source amount entered accounts for the 1/2 of all nitrogen source amounts, and remaining carbon source and nitrogen source are together passed through after being put into spherical hot stove, this pre-
First be passed through the mode of nitrogen source and carbon source so that previously fabricated carbon atmosphere and nitrogen atmosphere is more reasonable, be conducive to the subsequent carburizing of waist wheel and
Nitriding.
Further, spherical hot stove heats in burner hearth finish removal after, divulged information by the way of two reversed wind regimes, two
Wind regime air-out direction is oppositely arranged, and spherical hot stove is then positioned at two wind regimes between, and the difference of the wind speed of two wind regimes is 2.5~3.5m/
s.The cooling effect of this mode is more preferable, avoids leeward cooling lag.
Further, rotation of the spherical hot stove in each stage is dynamic around the shaft rotation of itself a certain diameter, with
So that spherical hot stove is uniformly heated rationally, heating is rapid so that all waist wheels are as possible within the scope of reasonable temperature, without producing
Raw partial deviations are excessive.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (6)
1. a kind of carbo-nitriding method of waist wheel, it is characterised in that：It carries out according to the following steps,
(1) first waist wheel is cleaned with 12%~15% dilute hydrochloric acid, removes dregs, is dried for standby；
(2) waist wheel is contained using spherical hot stove, it is each to install if being provided with the mounting bracket that dried layer is mutually parallel in spherical hot stove
Include the mandril that several rows are mutually parallel on frame, each mandril coaxial spaced arrangement, and on adjacent two mandril end face
Blind hole there are one opening is equipped with spring in blind hole, the both ends of the shaft of waist wheel is inserted into respectively in two blind holes and in spring
It is mounted between adjacent two mandril under pressure；Spherical hot stove is mounted on a rotating machinery, and spherical hot stove is allow to rotate；
(3) after all installing waist wheel, spherical hot stove is preheated to 200 degrees Celsius, the preheating of the process is led using mineral type
Deep fat is preheated to 200 degrees Celsius and is kept for 20 minutes at a temperature of no more than 250 degrees Celsius, and spherical shape hot stove is containing when preheating
There is submergence in the vessel of conduction oil and is rotated with the speed of 35~40r/min；
(4) it after preheating 20 minutes, spherical hot stove is removed and is placed on steelframe drains 5 minutes, then shift spherical hot stove
It is had risen to temperature hanging in 400 degrees Celsius of burner hearth and continues to be heated to 660~685 degrees Celsius, and at such a temperature
Kept for 15 minutes or more, the speed rotation spherical hot stove with 50~55r/min is needed in entire heating process；Burner hearth is being put into
A certain amount of carbon source and nitrogen source are passed through before spherical hot stove in advance, and ensures the duration that carbon source and nitrogen source are under 400 degrees Celsius
No less than 10 minutes；
(5) spherical shape hot stove heats in burner hearth finishes rapid removal later, when being placed at ventilation and heat and cool down, and ensureing to divulge information
Wind speed is 2~3.5m/s, and rotor is taken out one by one after cooling, is put the oil, joint sealing storage.
2. the carbo-nitriding method of waist wheel according to claim 1, it is characterised in that：It is 60 to remove the temperature dried after dregs
~80 DEG C.
3. the carbo-nitriding method of waist wheel according to claim 2, it is characterised in that：All waist wheels in spherical hot stove by by
Outer extremely interior sequence arrangement density gradually becomes smaller, and the gap between adjacent two waists wheel is not less than 20cm, but is not more than 30cm.
4. the carbo-nitriding method of waist wheel according to claim 3, it is characterised in that：Burner hearth is advance before being put into spherical hot stove
The carbon source amount being passed through accounts for the 1/3 of all carbon source amounts, and the nitrogen source amount being passed through in advance accounts for the 1/2 of all nitrogen source amounts, remaining carbon source and
Nitrogen source is together passed through after being put into spherical hot stove.
5. the carbo-nitriding method of waist wheel according to claim 4, it is characterised in that：Spherical hot stove is heated in burner hearth and is finished
It after removal, is divulged information by the way of two reversed wind regimes, two wind regime air-out directions are oppositely arranged, and spherical hot stove is then located at two wind
Between source, the difference of the wind speed of two wind regimes is 2.5~3.5m/s.
6. according to the carbo-nitriding method of any one of the claim 1-5 waist wheel, it is characterised in that：The spherical shape hot stove exists
The rotation in each stage is dynamic around the shaft rotation of itself a certain diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608476.1A CN108677134A (en) | 2018-06-13 | 2018-06-13 | A kind of carbo-nitriding method of waist wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608476.1A CN108677134A (en) | 2018-06-13 | 2018-06-13 | A kind of carbo-nitriding method of waist wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108677134A true CN108677134A (en) | 2018-10-19 |
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ID=63811004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810608476.1A Pending CN108677134A (en) | 2018-06-13 | 2018-06-13 | A kind of carbo-nitriding method of waist wheel |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003087648A1 (en) * | 2002-04-10 | 2003-10-23 | Christian Bauer Gmbh + Co. | Sprung steel connecting element at risk of corrosion, for connecting two hot components |
| CN101663409A (en) * | 2007-09-28 | 2010-03-03 | 爱信艾达株式会社 | Jig for vacuum heat treatment and method of vacuum heat treatment |
| CN101805882A (en) * | 2010-04-22 | 2010-08-18 | 上海电机学院 | Process for controlling deformation of gas nitrocarburizing part |
| CN201793714U (en) * | 2010-09-27 | 2011-04-13 | 中山市三民金属处理有限公司 | Loading fixture for soft nitriding automobile valves |
-
2018
- 2018-06-13 CN CN201810608476.1A patent/CN108677134A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003087648A1 (en) * | 2002-04-10 | 2003-10-23 | Christian Bauer Gmbh + Co. | Sprung steel connecting element at risk of corrosion, for connecting two hot components |
| CN101663409A (en) * | 2007-09-28 | 2010-03-03 | 爱信艾达株式会社 | Jig for vacuum heat treatment and method of vacuum heat treatment |
| CN101805882A (en) * | 2010-04-22 | 2010-08-18 | 上海电机学院 | Process for controlling deformation of gas nitrocarburizing part |
| CN201793714U (en) * | 2010-09-27 | 2011-04-13 | 中山市三民金属处理有限公司 | Loading fixture for soft nitriding automobile valves |
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Application publication date: 20181019 |