CN204878758U - Valve with stainless steel overlay - Google Patents
Valve with stainless steel overlay Download PDFInfo
- Publication number
- CN204878758U CN204878758U CN201520409987.2U CN201520409987U CN204878758U CN 204878758 U CN204878758 U CN 204878758U CN 201520409987 U CN201520409987 U CN 201520409987U CN 204878758 U CN204878758 U CN 204878758U
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- valve body
- flashboard
- valve
- steel layer
- 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.)
- Expired - Fee Related
Links
Landscapes
- Arc Welding In General (AREA)
Abstract
The utility model relates to a valve with stainless steel overlay, including valve body, valve gap, sealing washer, flashboard, handle, valve body stainless steel layer and flashboard stainless steel layer, the flashboard sets up in the inner chamber of valve body, valve body stainless steel layer and flashboard stainless steel layer sealing contact, valve body stainless steel layer is the overlay of inert gas protection welding stainless steel, and flashboard stainless steel layer is the overlay of inert gas protection welding stainless steel, and valve body and valve gap are through a plurality of bolted connection, the utility model discloses the nodular cast iron base member that has difficult wearing and tearing, life height, sound construction, durable, stainless steel overlay and a valve gate valve combines well, has better shock resistance, rust -preventing characteristic, machinability, save that the welding is preheated and heat preservation process, microstructure are fine and close, remaining internal stress is fully released, and interior distributing of stress is even between the tissue, harmful components is few, the rust -preventing characteristic of stainless steel keeps well and avoid appearing carburization and intercrystalline corrosion.
Description
Technical field
The utility model relates to valve technology field, particularly relates to a kind of valve with stainless steel weld overlays.
Background technique
At present, on market, in iron gate valve, the quality of flashboard is very heavy, and when closing flashboard, the sealing surface between flashboard and valve body easily causes erosion and scratch, causes sealing poor, easily leaks, and keeps in repair the problem existence such as more difficult, pressure rating is low.And valve rod slides up and down in valve body in gate valve, easily produce leakage, therefore in gate valve, the sealing at this two place is easily gone wrong most.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of sound construction, good airproof performance and the long-lived valve with stainless steel weld overlays.
The technical solution adopted in the utility model:
the utility modelcomprise valve body, be arranged on the valve gap of valve body upper end-hole, be arranged on seal ring between valve body and valve gap, handle that the flashboard that is arranged on body cavity is connected with flashboard, heap are welded in the valve body stainless steel layer that connects on body cavity wall and by inert-gas arc welding and heap is welded on flashboard end and by inert-gas arc welding connect flashboard stainless steel layer; Described flashboard is arranged in the inner chamber of valve body, and described valve body stainless steel layer contacts with the sealing of flashboard stainless steel layer.
further,described valve body stainless steel layer is the overlay cladding that MIG welds soldering stainless steel, and flashboard stainless steel layer is the overlay cladding that MIG welds soldering stainless steel.
further,described inert gas is argon gas and/or helium.
further,described valve body and/or flashboard are spheroidal graphite cast iron.
further,described valve body and/or flashboard are spheroidal graphite cast iron QT450-12.
further,the layer thickness of described valve body stainless steel layer and/or flashboard stainless steel layer is 1 ~ 3mm.
further,described valve body is connected by multiple bolt with valve gap.
The effect that the utility model is useful is:
Sealing surface of the present utility model adopts valve base (comprising valve plate matrix and flashboard matrix) sealing surface weld deposit stainless steel lining, not easy to wear, high life; Stainless steel is piled and is welded on magnesium iron matrix and fuses into one, sound construction, durable in use; Stainless steel adopts inert-gas arc welding to connect, preferred MIG Welding heap is welded on valve gate valve ball ink cast iron matrix, the spheroidal graphite cast iron matrix of stainless steel weld overlays and valve gate valve is combined, have better shock resistance, rust protection, workability, saving welding preheating and insulation operation, metallographic structure densification, residualinternal stress fully to discharge, between tissue, internal stress is evenly distributed, harmful components are few, stainless rust protection keeps good and avoids occurring carburizing and intergranular corrosion; The thickness of stainless steel weld overlays is enough to ensure practical application performance, reasonable in design, durable in use; Handle is adopted to be connected the folding that can control flashboard with flashboard, easy to use; In the upper end-hole of valve body, valve gap be installed and be fastened by bolts, adopting this structure, easy to assembly, be convenient to maintenance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the enlarged diagram of Fig. 1 C;
Fig. 3 is the structural representation of the utility model embodiment 2;
Fig. 4 is the enlarged diagram of Fig. 3 B;
Fig. 5 is the structural representation of the utility model embodiment 3;
Fig. 6 is the enlarged diagram of Fig. 5 A.
Accompanying drawing illustrates: 11, the first valve body; 12, the first flashboard; 13, the first valve body stainless steel layer; 14, the first flashboard stainless steel layer; 15, the first valve gap; 16, first handle; 21, the second valve body; 22, the second flashboard; 23, the second valve body stainless steel layer; 24, the second flashboard stainless steel layer; 25, the second valve gap; 26, second handle; 31, the 3rd valve body; 32, the 3rd flashboard; 33, the 3rd valve body stainless steel layer; 34, the 3rd flashboard stainless steel layer; 35, the 3rd valve gap; 36, the 3rd handle.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, wherein in embodiment 1: valve body is the first valve body 11, flashboard is the first flashboard 12, valve body stainless steel layer is the first valve body stainless steel layer 13, flashboard stainless steel layer is the first flashboard stainless steel layer 14, valve gap is the first valve gap 15, handle is first handle 16; In example 2: valve body is the second valve body 21, flashboard is the second flashboard 22, valve body stainless steel layer is the second valve body stainless steel layer 23, flashboard stainless steel layer is the second flashboard stainless steel layer 24, valve gap is the second valve gap 25, handle is second handle 26; In embodiment 3: valve body is the 3rd valve body 31, flashboard is the 3rd flashboard 32, valve body stainless steel layer is the 3rd valve body stainless steel layer 33, flashboard stainless steel layer is the 3rd flashboard stainless steel layer 34, valve gap is the 3rd valve gap 35, handle is the 3rd handle 36.
Embodiment 1: as shown in Figure 1-2, the present embodiment is for being applied on safety check, and it comprises the first valve body 11, be arranged on the first valve gap 15 of the first valve body 11 upper end-hole, be arranged on seal ring between the first valve body 11 and the first valve gap 15, first handle 16 that the first flashboard 12 of being arranged on the first valve body 11 inner chamber is connected with the first flashboard 12, pile the first valve body stainless steel layer 13 of being welded on the first valve body 11 internal chamber wall and pile the first flashboard stainless steel layer 14 be welded on the first flashboard 12 end; Described first flashboard 12 is arranged in the inner chamber of the first valve body 11, and described first valve body stainless steel layer 13 contacts with the first flashboard stainless steel layer 14 sealing; Described first valve body stainless steel layer 13 connects stainless overlay cladding for inert-gas arc welding, and described first flashboard stainless steel layer 14 is the overlay cladding of inert-gas arc welding soldering stainless steel.Described first valve body stainless steel layer 13 is the overlay cladding of MIG weldering soldering stainless steel, and the first flashboard stainless steel layer 14 is the overlay cladding of MIG weldering soldering stainless steel.Described inert gas is argon gas and/or helium.Described first valve body 11 and/or the first flashboard 12 are spheroidal graphite cast iron, are preferably spheroidal graphite cast iron QT450-12; Welding the stainless steel welding stick trade mark used is 304,308,309 or 316.Described stainless steel weld overlays thickness is 1 ~ 3mm.Described first valve body 11 is connected by multiple bolt with the first valve gap 15.
Embodiment 2: as shown in Figure 3-4, the present embodiment is for being applied on gate valve, and it comprises the second valve body 21, be arranged on the second valve gap 25 of the second valve body 21 upper end-hole, be arranged on seal ring between the second valve body 21 and the second valve gap 25, second handle 26 that the second flashboard 22 of being arranged on the second valve body 21 inner chamber is connected with the second flashboard 22, pile the second valve body stainless steel layer 23 of being welded on the second valve body 21 internal chamber wall and pile the second flashboard stainless steel layer 24 be welded on the second flashboard 22 end; Described second flashboard 22 is arranged in the inner chamber of the second valve body 21, and described second valve body stainless steel layer 23 contacts with the second flashboard stainless steel layer 24 sealing; Described second valve body stainless steel layer 23 connects stainless overlay cladding for inert-gas arc welding, and described second flashboard stainless steel layer 24 is the overlay cladding of inert-gas arc welding soldering stainless steel.Described second valve body stainless steel layer 23 is the overlay cladding of MIG weldering soldering stainless steel, and the second flashboard stainless steel layer 24 is the overlay cladding of MIG weldering soldering stainless steel.Described inert gas is argon gas and/or helium.Described second valve body 21 and/or the second flashboard 22 are spheroidal graphite cast iron, are preferably spheroidal graphite cast iron QT450-12; Welding the stainless steel welding stick trade mark used is 304,308,309 or 316.Described stainless steel weld overlays thickness is 1 ~ 3mm.Described second valve body 21 is connected by multiple bolt with the second valve gap 25.
Embodiment 3: as seen in figs. 5-6, the present embodiment is for being applied on stop valve, and it comprises the 3rd valve body 31, be arranged on the 3rd valve gap 35 of the 3rd valve body 31 upper end-hole, be arranged on seal ring between the 3rd valve body 31 and the 3rd valve gap 35, the 3rd handle 36 that the 3rd flashboard 32 that is arranged on the 3rd valve body 31 inner chamber is connected with the 3rd flashboard 32, pile the 3rd valve body stainless steel layer 33 that is welded on the 3rd valve body 31 internal chamber wall and pile the 3rd flashboard stainless steel layer 34 be welded on the 3rd flashboard 32 end; Described 3rd flashboard 32 is arranged in the inner chamber of the 3rd valve body 31, and described 3rd valve body stainless steel layer 33 contacts with the 3rd flashboard stainless steel layer 34 sealing; Described 3rd valve body stainless steel layer 33 connects stainless overlay cladding for inert-gas arc welding, and described 3rd flashboard stainless steel layer 34 is the overlay cladding of inert-gas arc welding soldering stainless steel.Described 3rd valve body stainless steel layer 33 is the overlay cladding of MIG weldering soldering stainless steel, and the 3rd flashboard stainless steel layer 34 is the overlay cladding of MIG weldering soldering stainless steel.Described inert gas is argon gas and/or helium.Described 3rd valve body 31 and/or the 3rd flashboard 32 are spheroidal graphite cast iron, are preferably spheroidal graphite cast iron QT450-12; Welding the stainless steel welding stick trade mark used is 304,308,309 or 316.Described stainless steel weld overlays thickness is 1 ~ 3mm.Described 3rd valve body 31 is connected by multiple bolt with the 3rd valve gap 35.
Following technique is to the one citing of the utility model at the upper built-up welding stainless steel layer processing mode of valve base (comprising valve body matrix and valve plate matrix), adopts MAG welding or TIG welding also can process the utility model.As
Selection process comprises the steps:
The first step, position to be welded for valve base is cleaned out, and being put on automatic surfacing worktable to be welded, it is the solid stainless steel welding stick of φ 0.8mm ~ φ 1.2mm that wire feeding machine places diameter, the solid stainless steel welding stick of φ 1.2mm of the trades mark such as such as 304,308,309 and 316.If welding room temperature is 18 DEG C ~ 40 DEG C, preferably 18 DEG C ~ 22 DEG C, welding effect is good; Further, indoor air relative humidity is 20% ~ 60%, preferably 20% ~ 40%, and welding effect is better; Welding is applicable to annual room temperature and the humidity of the air in China's overwhelming majority area, especially can be better at northern area welding effect.Described valve base comprises valve body matrix and valve plate matrix.
Second step; adopt pulsed gas metal arc welding: welding manner is Full-automatic welding; welding current is pulse direct current, and anode is reversal connection, and electric current is 150 ~ 180A; preferred 150A; electric current is too small there will be valve base and wlding and stainless steel welding stick, cannot fuse, easily produce the defects such as lack of penetration; electric current is crossed conference and is caused layer to occur the defect such as crackle, overlap, shaping bad.Shielding gas is argon gas, and can be the inert gases such as the mixed gas of helium or argon gas and helium, the flow of gas be 10 ~ 17L/min, preferred 12L/min; Welding speed is 8 ~ 15cm/min, preferred 12cm/min, if welding speed is too fast, fusion penetration increase makes layer rate of dilution increase, and the chemical composition of overlay cladding is difficult to ensure, binder course easily occurs crackle; Welding speed is excessively slow, and layer thickness increases too much, easily produces overlap, and waste wlding.Being welded as single layer welding thickness is 2-4mm, preferred 3mm.Adopt above-mentioned preferred parameter, welding effect is best.
3rd step, after having welded, for better preventing cracking, what cover weldering one deck length 10mm-15mm at the initial jointing of welding of valve base and wlding moves back arc-welding layer.
The technique of built-up welding stainless steel sealing surface in ductile cast iron valve base is described in detail in below with two specific embodiments:
Embodiment 4:
Valve base is spheroidal graphite cast iron QT450-12, with pulsed gas metal arc welding built-up welding 308 stainless steel solid core welding wire: welding machine: electric welding machine NBC-350(contravariant carbon dioxide gas arc welding); Welding room temperature 18 DEG C-22 DEG C, relative air humidity is 20% ~ 40%.With pulsed gas metal arc welding, joint geometry is prosposition built-up welding, gage of wire φ 1.2; layer minimum thickness is 2mm, single layer welding, and the gas flow of shielding gas argon gas is 10 ~ 12L/min; electric current is pulse direct current (DC) 150A, and polarity is negative polarity, and mode of metal transfer is spray transfer; weave bead welding, single-pass welding, conductive mouth specification is φ 1.4; welding speed is 8-12cm/min; after being soldered, jointing cover weldering 10-12mm move back arc-welding layer, processibility is good.
Embodiment 5:
Valve base is spheroidal graphite cast iron QT500-7, with pulsed gas metal arc welding built-up welding SUS316 stainless steel solid core welding wire: welding machine: electric welding machine NBC-350(contravariant carbon dioxide gas arc welding); Welding room temperature 22 DEG C-36 DEG C, relative air humidity is 40% ~ 60%.With pulsed gas metal arc welding, joint geometry is prosposition built-up welding, and gage of wire is Φ 0.8; layer minimum thickness is 4mm, two layers of weldering, and the gas flow of shielding gas argon gas is 12 ~ 17L/min; electric current is pulse direct current (DC) 180A, and polarity is negative polarity, and mode of metal transfer is spray transfer; weave bead welding, single-pass welding, conductive mouth specification is Φ 1.4; welding speed is 12-15cm/min; after being soldered, jointing cover weldering 10-12mm move back arc-welding layer, processibility is good.
Embodiment 6:
Gate valve plate matrix is spheroidal graphite cast iron QT450-12, welding scope: outside diameter φ 250, width 8mm, indoor air relative humidity 30% ~ 40%, room temperature 20 DEG C, layer thickness 3mm.In matrix heated portion, stainless steel layer, fused layers and matrix is comprised successively by thermosphere by soldering stainless steel skin after welding.
Adopt this patent welding procedure, total weld interval is 0.5 ~ 0.6 hour, by monthly within 8 hours × 22 days, calculating, monthly welding 300 ~ 360 valve plates, manufacturing efficiency is greatly improved; When subsequent mechanical processing sealing surface, often process a needs reconditioning blade 0.2 ~ 0.5 time, have the layer of 1 ~ 2 to occur pore in every 100, need repair welding; Do crank detection test: on average occur slight crack with regard to the layer having 1 ~ 2, tensile strength 520 ~ 700Mpa in every 95, welding penetration is 0.3 ~ 0.5mm, reduce thermodiffusion during welding, in metallographic structure, cementite content is less than 5%, and ledeburite content is less than 2%.Do pressure testing test after having been assembled by gate valve, pressure 24Mpa, water velocity 15m/s, repeatedly folding valve plate, gate valve is when use 15000 ~ 18000 times, and sealing surface starts infiltration; When use 20000 ~ 24000 times, there is cavitation in sealing surface, flawless, and when use more than 28000 times, gate valve wearing and tearing are scrapped, and sealing surface not layer comes off and non-corrosive.
As shown in figures 1 to 6, sealing surface of the present utility model adopts valve base (comprising the matrix of valve plate and the matrix of flashboard) sealing surface weld deposit stainless steel lining, not easy to wear, high life; Stainless steel is piled and is welded on magnesium iron matrix and fuses into one, sound construction, durable in use; Stainless steel adopts inert-gas arc welding to connect, preferred MIG Welding heap is welded on the spheroidal graphite cast iron matrix of valve and gate valve, stainless steel weld overlays and valve gate valve ball ink cast iron matrix are combined, have better shock resistance, rust protection, workability, saving welding preheating and insulation operation, metallographic structure densification, residualinternal stress fully to discharge, between tissue, internal stress is evenly distributed, harmful components are few, stainless rust protection keeps good and avoids occurring carburizing and intergranular corrosion; The thickness of stainless steel weld overlays is enough to ensure practical application performance, reasonable in design, durable in use.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. there is a valve for stainless steel weld overlays, it is characterized in that: comprise valve body (11; 21; 31) valve body (11, is arranged on; 21; 31) valve gap (15 of upper end-hole; 25; 35) valve body (11, is arranged on; 21; 31) and valve gap (15; 25; 35) seal ring between, valve body (11 is arranged on; 21; 31) flashboard (12 of inner chamber; 22; 32) and flashboard (12; 22; 32) handle (16 connected; 26; 36), heap is welded in valve body (11; 21; 31) the valve body stainless steel layer (13 connect on internal chamber wall and by inert-gas arc welding; 23; 33) and heap be welded in flashboard (12; 22; 32) on end and by inert-gas arc welding connect flashboard stainless steel layer (14; 24; 34); Described flashboard (12; 22; 32) valve body (11 is arranged on; 21; 31) in inner chamber, described valve body stainless steel layer (13; 23; 33) and flashboard stainless steel layer (14; 24; 34) sealing contact.
2. the valve with stainless steel weld overlays according to claim 1, is characterized in that: described valve body stainless steel layer (13; 23; 33) for MIG welds the overlay cladding of soldering stainless steel, flashboard stainless steel layer (14; 24; 34) for MIG welds the overlay cladding of soldering stainless steel.
3. the valve with stainless steel weld overlays according to claim 2, is characterized in that: described inert gas is argon gas and/or helium.
4. the valve with stainless steel weld overlays according to any one of claim 1-3, is characterized in that: described valve body (11; 21; 31) and/or flashboard (12; 22; 32) be spheroidal graphite cast iron.
5. the valve with stainless steel weld overlays according to claim 4, is characterized in that: described valve body (11; 21; 31) and/or flashboard (12; 22; 32) be spheroidal graphite cast iron QT450-12.
6. the valve with stainless steel weld overlays according to claim 5, is characterized in that: described valve body stainless steel layer (13; 23; 33) and/or flashboard stainless steel layer (14; 24; 34) layer thickness is 1 ~ 3mm.
7. the valve with stainless steel weld overlays according to claim 1, is characterized in that: described valve body (11; 21; 31) and valve gap (15; 25; 35) connected by multiple bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520409987.2U CN204878758U (en) | 2015-06-15 | 2015-06-15 | Valve with stainless steel overlay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520409987.2U CN204878758U (en) | 2015-06-15 | 2015-06-15 | Valve with stainless steel overlay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204878758U true CN204878758U (en) | 2015-12-16 |
Family
ID=54823132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520409987.2U Expired - Fee Related CN204878758U (en) | 2015-06-15 | 2015-06-15 | Valve with stainless steel overlay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204878758U (en) |
-
2015
- 2015-06-15 CN CN201520409987.2U patent/CN204878758U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103481010B (en) | A kind of full-automatic online cold welding pattching roll squeezer technique | |
| CN104759743A (en) | Argon arc welding technological method for nickel base alloy tubes | |
| CN107598351B (en) | Large-area plasma surfacing method for outer circle of Stellite cobalt-based alloy | |
| CN102974916B (en) | HP series grinding roller open arc built-up welding slip-off preventing welding method | |
| CN101982282A (en) | Welding technology for butt welding of composite boards | |
| CN101954566B (en) | Process for fixedly connecting titanium cooling tube in cooler and radiating fins and titanium tube plate | |
| CN101402152B (en) | Steel-smelting revolving furnace smoke canal weld deposit process | |
| CN102363239B (en) | Automatic narrow-gap submerged arc welding process for all-welded fixed ball valve with medium and large calibers | |
| CN101508053A (en) | Welding method of high-nickel alloy and stainless steel dissimilar metal | |
| CN102699493B (en) | Carbon dioxide (CO2) gas shielded welding vertical downwards welding method for waste heat boiler heat pipe and connecting plate | |
| CN111283308B (en) | All-position shielded metal arc welding process for ultralow-temperature 304LN austenitic stainless steel medium plate | |
| CN102785004A (en) | Process for surfacing stainless steel sealing face on ductile cast iron valve base | |
| CN101774059A (en) | Welding process of 10CrMoAl seawater corrosion resistant steel tube | |
| CN104339123A (en) | Bimetal composite pipe welding method | |
| CN101890557A (en) | Welding process of megaton ethane compressor casing | |
| CN102615392A (en) | Welding groove process of mechanical bimetallic composite marine pipe | |
| CN105251971B (en) | A kind of method hot rolling plate base process interlayer vacuum coating method | |
| CN107030359B (en) | Bimetal mechanical composite pipe welding process | |
| CN102794550B (en) | Method for welding terminal circular seams of compound steel plates | |
| CN108890092B (en) | Method for single-side welding and double-side forming of fusion electrode MAG welding tube plate | |
| CN109530883A (en) | A kind of stainless steel 310S welding procedure | |
| CN101147997A (en) | Cobalt-less material 616 argon arc-welding built-up welding technology | |
| CN204878758U (en) | Valve with stainless steel overlay | |
| US10058959B2 (en) | Method for remanufacturing ultra-large copper nut | |
| CN104400252A (en) | Flux-cored wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 056300, Hebei, Handan province Wuan City Yun Ling Industrial Zone Hebei Hengtong Valve Co., Ltd. Patentee after: Hengtong Valve Co Ltd Address before: 056300, Hebei, Handan province Wuan City Yun Ling Industrial Zone Hebei Hengtong Valve Co., Ltd. Patentee before: Hebei Hengtong Valve Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20200615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |