CN204918770U - Low, middling pressure flame device of refusing - Google Patents
Low, middling pressure flame device of refusing Download PDFInfo
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- CN204918770U CN204918770U CN201520498062.XU CN201520498062U CN204918770U CN 204918770 U CN204918770 U CN 204918770U CN 201520498062 U CN201520498062 U CN 201520498062U CN 204918770 U CN204918770 U CN 204918770U
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- acetylene
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Abstract
The utility model relates to a low, middling pressure flame device of refusing. Its characteristics are: including dabber (5), the suit remains ball core (3) of processing on this dabber (5), and the one end of this dabber (5) is installed on support frame (6) and its other end is installed on the chuck, and this chuck is connected with motor drive (1) transmission initiatively to can drive mobile core axle (5) and ball core (3) rotation, be equipped with the oxy -acetylene in these ball core (3) top and refuse rifle (2), and be equipped with high -power gas combustion machine (4) in the side of these ball core (3). Adopt the utility model discloses a low, middling pressure flame device of refusing, has effectively solved valve ball core more than the DN200 and lead to melting because the size is big, the caloric receptivity is big cover in -process unit area sintering time overlength, the local temperature is too high on the alloy powder layer, make ball core base member with melt cover that interlaminar stress increases, the oxidation is serious, melt coating and ball core base member within a definite time the defect quality problems such as increase.
Description
Technical field
The utility model relates to a kind of low, middle banking fire flame remelting apparatus.
Background technology
At present, the Flame tube~+ technique of more than DN200 valve ball wicking surface generally adopts one flame gun is carried out Flame tube~+ to the ball core after dusting, but, because more than DN200 valve ball core size is large, caloric receptivity is large, the unit surface cladding time is caused to lengthen, make that sphere local temperature is too high, base material and coating oxidation increase the weight of, make that ball core stress strengthens, clad surface scaling loss is serious, defects in cladding layer is serious.
Utility model content
The purpose of this utility model is to provide a kind of low, middle banking fire flame remelting apparatus, significantly can improve the quality of more than DN200 valve ball core cladding layer.
A kind of low, middle banking fire flame remelting apparatus, its special feature is: comprise mandrel, this mandrel is set with ball core to be processed, one end of this mandrel is arranged on its other end on bracing frame and is arranged on chuck, this chuck is in transmission connection with active motor driver, thus mandrel and ball core can be driven to rotate; Above this ball core, be provided with oxy-acetylene remelting rifle, and be provided with high-power gas burning machine in the side of this ball core.
Wherein initiatively motor driver and bracing frame are installed on base plate.
Wherein the injection direction of oxy-acetylene remelting gun sprayer is vertical sensing ball core upper surface and passes the centre of sphere, and the injection direction of high-power gas combustion engine showerhead is level sensing ball core side surface and also passes the centre of sphere.
Through probationary certificate, adopt low, middle banking fire flame remelting apparatus of the present utility model, efficiently solve more than DN200 valve ball core because size is large, caloric receptivity causes unit surface in cladding process to fuse overlong time greatly, alloy powder last layer local temperature is too high, ball core matrix and cladding inter-laminar stress are strengthened, is oxidized serious, quality problems such as defect increases between cladding layer and ball core matrix, thus the quality of more than DN200 valve ball core cladding layer is significantly improved.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is principle of work schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model provides a kind of low, middle banking fire flame remelting apparatus, comprise mandrel 5, this mandrel 5 is set with ball core 3 to be processed, one end of this mandrel 5 is arranged on bracing frame 6 that its other end is arranged on chuck, this chuck is in transmission connection with active motor driver 1, thus mandrel 5 and ball core 3 (synchronously) can be driven to rotate; Directly over this ball core 3, be provided with oxy-acetylene remelting rifle 2, and be provided with high-power gas burning machine 4 in the positive side of this ball core 3.
Wherein initiatively motor driver 1 and bracing frame 6 are installed on base plate 7.Further, the injection direction of oxy-acetylene remelting rifle 2 shower nozzle is vertical sensing ball core 3 upper surface and passes the centre of sphere, and the injection direction of high-power gas burning machine 4 shower nozzle is level sensing ball core 3 side surface and also passes the centre of sphere.
As shown in Figure 1, 2, it is a kind of low, middle banking fire flame remelting apparatus that the utility model provides, comprise initiatively motor driver 1, bracing frame 6, base plate 7, oxy-acetylene remelting rifle 2, high-power gas burning machine 4, ball core 3 and supporting mandrel 5, wherein initiatively motor driver 1, bracing frame 6 and base plate 7 constitute the fixing part of this device.Ball core 3 and mandrel 5 are movable part and are detachably connected, and mandrel 5 can be different according to the difference of the specification of ball core 3 fusion.Time initial, the muzzle of oxy-acetylene remelting rifle 2 is perpendicular to mandrel 5 and be in 100mm place directly over the centre of sphere, high-power gas burning machine 4 axis and oxy-acetylene remelting rifle 2 axes normal and all cross the centre of sphere and perpendicular to mandrel 5 (being in the positive side 500mm of the centre of sphere), relative to ball core 3 sense of rotation, high-power gas burning machine 4 is in oxy-acetylene remelting rifle 2 front all the time and the two has identical circular frequency.
Using method of the present utility model and principle of work are:
The object of oxy-acetylene remelting rifle 2 be to spray powdered alloy after ball core 3 carry out remelting, reach metallurgical binding.Oxyacetylene torch has neutral flame, carbonizing flame, oxydizing flame three kinds of forms, and in neutral flame, the volumetric mixture ratio of oxygen and acetylene is 1.1-1.2, and the oxygen that after its burning, nothing is superfluous is also without uncombined carbon.
High-speed flame makes melted surface blow wrinkle, even molten alloy is dispelled, and causes show-through, so avoid flame flow velocity too fast when carrying out remelting practice.Therefore, middle pressure neutral flame rifle is chosen as oxy-acetylene remelting rifle 2.
The object of high-power gas burning machine 4 carries out preheating to part.During flame remolten, flame easily makes coating and base material oxidation, so the remelting time should shorten as far as possible, but more than DN200 valve ball core 3 is because size is large, wall thickness, cause its caloric receptivity large, cause the unit surface remelting time to lengthen, ball core 3 coating, base material are oxidized serious, even can cause the major defect of coating and transition layer.Therefore, homogeneous temperature is needed during remelting, power is comparatively large and energy is larger low pressure soft fire carries out local heating to ball core 3, the temperature difference between the remelting surface temperature that banking fire flame is caused and coated substrate reduces, coating can penetration, and produces diffusion type with matrix and engage and improve the quality after remelting.
Low, middle ballast fusing device of the present utility model is that after being coordinated with corresponding mandrel 5 expander by the ball core 3 of more than DN200 valve, one end is clamped on active motor driver 1, the other end is fixed on bracing frame 6, starter motor driving mechanism makes ball core 3 rotate, then start after ball core 3 is preheated to 700-860 DEG C by high-power gas burning machine 4 and turn down high-power gas burning machine 4 to baking flame, meanwhile start oxy-acetylene remelting rifle 2 pairs of ball cores 3 and carry out remelting, oxy-acetylene remelting rifle 2 has identical angle of critical deformation speed with high-power gas burning machine 4.Sphere optional position is made all after high-power gas burning machine 4 heated baking, to carry out oxy-acetylene remelting.After sphere first closes oxy-acetylene remelting rifle 2 after complete remelting, close high-power gas burning machine 4 again, after ball core 3 naturally cooling, take off ball core 3 can carry out following process.
Claims (3)
1. low, a middle banking fire flame remelting apparatus, it is characterized in that: comprise mandrel (5), this mandrel (5) is set with ball core (3) to be processed, one end of this mandrel (5) is arranged on that bracing frame (6) is upper and its other end is arranged on chuck, this chuck is in transmission connection with active motor driver (1), thus mandrel (5) and ball core (3) can be driven to rotate; Be provided with oxy-acetylene remelting rifle (2) in this ball core (3) top, and be provided with high-power gas burning machine (4) in the side of this ball core (3).
2. low, middle banking fire flame remelting apparatus as claimed in claim 1, is characterized in that: wherein initiatively motor driver (1) and bracing frame (6) are installed on base plate (7).
3. low, middle banking fire flame remelting apparatus as claimed in claim 1 or 2, it is characterized in that: wherein the injection direction of oxy-acetylene remelting rifle (2) shower nozzle is vertical sensing ball core (3) upper surface and passes the centre of sphere, and the injection direction of high-power gas burning machine (4) shower nozzle is level sensing ball core (3) side surface and also passes the centre of sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498062.XU CN204918770U (en) | 2015-07-10 | 2015-07-10 | Low, middling pressure flame device of refusing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498062.XU CN204918770U (en) | 2015-07-10 | 2015-07-10 | Low, middling pressure flame device of refusing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204918770U true CN204918770U (en) | 2015-12-30 |
Family
ID=54967916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520498062.XU Active CN204918770U (en) | 2015-07-10 | 2015-07-10 | Low, middling pressure flame device of refusing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204918770U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104947104A (en) * | 2015-07-10 | 2015-09-30 | 吴忠仪表有限责任公司 | Flame remelting device for valve ball core |
| CN110205627A (en) * | 2019-07-12 | 2019-09-06 | 江苏徐工工程机械研究院有限公司 | A kind of ring-shaped work pieces end face spray coating flame remolten processing unit (plant) |
-
2015
- 2015-07-10 CN CN201520498062.XU patent/CN204918770U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104947104A (en) * | 2015-07-10 | 2015-09-30 | 吴忠仪表有限责任公司 | Flame remelting device for valve ball core |
| CN110205627A (en) * | 2019-07-12 | 2019-09-06 | 江苏徐工工程机械研究院有限公司 | A kind of ring-shaped work pieces end face spray coating flame remolten processing unit (plant) |
| CN110205627B (en) * | 2019-07-12 | 2023-12-08 | 江苏徐工工程机械研究院有限公司 | Flame remelting processing device for end face spray coating of annular part |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |