CN109058117A - A method of extending zinc liquid pump graphite piece service life - Google Patents
A method of extending zinc liquid pump graphite piece service life Download PDFInfo
- Publication number
- CN109058117A CN109058117A CN201810962684.1A CN201810962684A CN109058117A CN 109058117 A CN109058117 A CN 109058117A CN 201810962684 A CN201810962684 A CN 201810962684A CN 109058117 A CN109058117 A CN 109058117A
- Authority
- CN
- China
- Prior art keywords
- liquid pump
- zinc liquid
- service life
- zinc
- graphite piece
- 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
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 87
- 239000011701 zinc Substances 0.000 title claims abstract description 87
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000007788 liquid Substances 0.000 title claims abstract description 86
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000010439 graphite Substances 0.000 title claims abstract description 33
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 30
- 239000000956 alloy Substances 0.000 claims abstract description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 18
- 238000003723 Smelting Methods 0.000 claims abstract description 15
- 238000005275 alloying Methods 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 3
- 230000008018 melting Effects 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000011819 refractory material Substances 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000007770 graphite material Substances 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000003570 air Substances 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001325 element alloy Inorganic materials 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-OUBTZVSYSA-N nitrogen-15 Chemical compound [15N] QJGQUHMNIGDVPM-OUBTZVSYSA-N 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of methods for extending zinc liquid pump graphite piece service life; its method is that solid zinc is put into alloy smelting furnace to be fused into liquid; and after alloying element alloying is added; it is extracted by the zinc liquid pump being mounted in the hermetically sealed container being connected with alloy melting furnace chamber, and is passed through nitrogen protection in closed container.Method of the invention not only increases corrosion-resistant, the high temperature resistance of zinc liquid pump graphite piece, and graphite component purity easy to maintain, at low cost, guaranteeing conveying metal；Implementing nitrogen protection is increased to its service life 6 months or so by original 1~3 month.Present invention process is simple, easy to use, at low cost, can be widely used for the conveying of corrosivity melt, has broad application prospects.
Description
Technical field
The present invention relates to zinc liquid pump technical fields, and in particular to a method of extend zinc liquid pump graphite piece service life.
Background technique
Zinc is a kind of active metal, and zinc liquid easily aoxidizes under high temperature, is easily chemically reacted with other metals, so zinc
The pump housing and pipeline of liquid conveying generally use heat-resisting alloy and nonmetallic materials to manufacture, such as graphite, ceramics material.Using alloy
The pump housing and pipeline of the zinc liquid conveying of material manufacture, price, and alloy is gradually dissolved in use, causes metal component
Pollution.Graphite is not reacted with zinc liquid, and specific heat is small, and high-temperature behavior is good, at low cost, easy to operate.But zinc liquid pump graphite piece also has certainly
The shortcomings that body, intensity is low, and easy fracture is damaged, and oxidizable corrosion, service life is shorter, generally at three months or so, needs often more
Change component.Both it influences to produce, spare part expense is again high.
Therefore, most of the conveying of domestic metal bath uses open & slippery trough at present, when this mode prepares in the presence of casting
Between longer, the defects such as heat loss is big, and metal oxidation is serious, high production cost, the large labor intensity of worker, and labor productivity is low.
The present invention carries out upgrading transformation such as to zinc liquid pump reality to existing zinc liquid pump graphite material using new material, new process
Apply nitrogen protection, in graphite surface coated with high temperature oxidation resistant coating, using measures such as novel ceramic materials, develop corrosion resistant
Erosion, high-intensitive, the long-life new zinc liquid pump, the service life of existing zinc liquid pump is extended, zinc liquid pump working service is reduced
Cost, to be widely popularized zinc liquid pump, thus increase substantially hot-dip galvanized alloy product quality, reduce slag rate and production cost,
Increase production capacity.
Summary of the invention
The purpose of the present invention is improving performance, service life and the efficiency of zinc liquid pump graphite member, provide a kind of simple process, at
The method of this cheap, easy to operate extension zinc liquid pump graphite piece service life.
In order to achieve the above object, present invention utilizes the chemical property of nitrogen, more stable in general, do not allow
Easily react with other substances.The zinc liquid pump being placed in closed container is passed through nitrogen, air and zinc liquid pump stone can be made
Black component isolation, is oxidized to slow down graphite member with air contact portion, so that zinc liquid pump service life extends twice of left side
The right side reduces zinc liquid pump working service cost to reduce maintenance frequency, improves production efficiency, increases production capacity, it is strong to reduce labour
Degree enhances safety, increases substantially hot-dip galvanized alloy product quality, reduces slag rate and production cost.
The technical scheme is that
A method of extending zinc liquid pump graphite piece service life, solid zinc is fused into liquid, and alloying element alloy is added
It after change, is extracted, is then cast by closed conduit conveying, while in closed appearance by the zinc liquid pump being placed in closed container
15~25min of nitrogen is passed through in device and in closed conduit.
As a further refinement of the present invention, the solid zinc is put into alloy smelting furnace and is fused into liquid, it is described close
Close container adjacent with alloy smelting furnace and link into an integrated entity, the closed container lower part is provided with to be connected with alloy smelting furnace
Inlet, the zinc liquid pump are installed vertically in closed container.
As a further refinement of the present invention, the in-furnace temperature of temperature in the closed container than alloy smelting furnace
Low 4~5 DEG C.
As a further refinement of the present invention, the zinc liquid pump uses submerged pump, the zinc liquid pump and closed conduit group
The conveying equipment cast at zinc liquid.
As a further refinement of the present invention, the zinc liquid pump is by pump case, impeller, transmission shaft, support shaft, pipeline group
At, and be graphite material, the flow of zinc liquid pump is controlled by variable-frequency governor.
As a further refinement of the present invention, the zinc liquid pump be installed on be connected with alloy melting furnace chamber it is closed
In container.
As a further refinement of the present invention, the closed conduit and the closed connection of zinc liquid pump, the closed conduit
It is made of steel pipe, liner layer, refractory material, the steel pipe internal-surface is lined with one layer of liner layer made of graphite, the liner
Layer is the integrated stone ink material pipeline being inserted in steel pipe, and the refractory material tamping is fixed between liner layer and steel pipe.
As a further refinement of the present invention, the nitrogen by with the offer of the nitrogen gas tank of closed container airtight connection, and
And it is passed through nitrogen 5min or so before opening zinc liquid pump, 15~25min of nitrogen is passed through after the unlatching of zinc liquid pump.
Beneficial effects of the present invention are as follows:
1. " closed " can be changed to by " open " for casting chute, plays purifying liquid zinc, improves hot-dip galvanized alloy product
Quality reduces security risk in production process, the labor intensity for reducing worker, the effects of raising labour productivity, can also be with
Slag rate when reduction alloy casting, about 22%.
2. being passed through nitrogen in zinc liquid pump closed container, air is isolated with zinc liquid pump graphite piece, to slow down graphite piece
The phenomenon that being oxidized quickly with air contact portion, so that its service life was reached current 6 months by original 1 to 3 month
More than.
3. zinc liquid pump graphite piece will be damaged by original once entering when furnace is used and lifted again because of oxidation corrosion reaches energy
The good result repeatedly used realizes the promotion of matter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of zinc liquid pouring device.
Fig. 2 is the structural schematic diagram of closed conduit.
In attached drawing: 1-alloy smelting furnace, 2-closed containers, 3-zinc liquid pumps, 4-closed conduits, 5-molds,
6-steel pipes, 7-refractory materials, 8-liner layers.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Embodiment, invention is further described in detail.It should be appreciated that specific embodiment described herein is used only for explaining this
Invention, is not intended to limit the present invention, and the present invention includes other embodiment and and its deformation within the scope of its technical idea.
A method of extending 3 graphite piece service life of zinc liquid pump, step 1: as shown in Figure 1, solid zinc is added to conjunction
It is fused into liquid in golden smelting furnace 1, adds slag former slag making at 480 DEG C or so, the alloying elements alloys such as Mn, Cr are added after skimming
Change.It is extracted, is then cast by the conveying of closed conduit 4, while closed by the zinc liquid pump 3 being placed in closed container 2
15~25min of nitrogen is passed through in container 2 and in closed conduit 4.It is passed through nitrogen in 3 closed container 2 of zinc liquid pump, makes air and zinc
The isolation of 3 graphite piece of liquid pump, to slow down graphite piece and the phenomenon that air contact portion is oxidized quickly so that its service life by
1 to 3 month originally reaches current 6 months or more.Preferably, the nitrogen is by the nitrogen with 2 airtight connection of closed container
Tank provides, and is passed through nitrogen 5min or so before opening zinc liquid pump 3, be passed through after zinc liquid pump 3 is opened nitrogen 15~
25min。
The closed container 2 is adjacent with alloy smelting furnace 1 and links into an integrated entity, 2 lower part of closed container be provided with
The inlet that alloy smelting furnace 1 is connected, the zinc liquid pump 3 be installed vertically on be connected with 1 inner cavity of alloy smelting furnace it is close
It closes in container 2.Closed container 2 can use closed kiln or closed holding vessel, and the temperature in closed container 2 is more molten than alloy
The in-furnace temperature of furnace 1 is 4~5 DEG C low.The zinc liquid pump 3 uses submerged pump, by pump case, impeller, transmission shaft, support shaft, pipeline
It Deng composition, and is graphite material, the flow of zinc liquid pump 3 is controlled by variable-frequency governor.The zinc liquid pump 3 with 4 groups of closed conduit
The conveying equipment cast at zinc liquid.
The closed conduit 4 and the closed connection of zinc liquid pump 3, as shown in Fig. 2, the closed conduit 4 is by steel pipe 6, liner
Layer 8, refractory material 7 form, and 6 inner surface of steel pipe is lined with one layer of liner layer 8 made of graphite, the liner layer 8 be
The integrated stone ink material pipeline being inserted in steel pipe 6,7 tamping of refractory material are fixed between liner layer 8 and steel pipe 6.Institute
Refractory material 7 is stated generally using fire clay or asbestos.
Step 2: casting: the variable-frequency governor of zinc liquid pump 3 is transferred to 27hz by starting zinc liquid pump 3, and aluminium alloy passes through zinc liquid
Pump 3 is extracted out from alloy smelting furnace 1, is transported to mold 5 through conveyance conduit and is cast, alloy flow quantity can pass through the tune of zinc liquid pump 3
Section variable-frequency governor is controlled, and realizes the casting of alloy pig.The present invention chute that will cast by " open " is changed to " closed ",
It plays purifying liquid zinc, improve hot-dip galvanized alloy product quality, the security risk in reduction production process, the labour for reducing worker
Intensity, the effects of raising labour productivity, can also reduce slag rate when alloy casting, and about 22%.Pervious 3 graphite of zinc liquid pump
Part once enters furnace using that will damage because of oxidation corrosion when lifting again, and 3 graphite piece of zinc liquid pump in the present invention can reach more
The good result of secondary reuse realizes the promotion of matter.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of method for extending zinc liquid pump graphite piece service life, it is characterised in that: solid zinc is fused into liquid, and is added
It after alloying element alloying, is extracted by the zinc liquid pump being placed in closed container, is then cast by closed conduit conveying,
While in closed container and 15~25min of nitrogen is passed through in closed conduit.
2. a kind of method for extending zinc liquid pump graphite piece service life according to claim 1, it is characterised in that: described solid
Body zinc, which is put into alloy smelting furnace, is fused into liquid, and the closed container is adjacent with alloy smelting furnace and links into an integrated entity, described
Closed container lower part is provided with the inlet being connected with alloy smelting furnace, and the zinc liquid pump is installed vertically on closed container
It is interior.
3. a kind of method for extending zinc liquid pump graphite piece service life according to claim 2, it is characterised in that: described
Temperature in closed container is 4~5 DEG C lower than the in-furnace temperature of alloy smelting furnace.
4. a kind of method for extending zinc liquid pump graphite piece service life according to claim 1, it is characterised in that: the zinc
Liquid pump uses submerged pump, and the zinc liquid pump and closed conduit constitute the conveying equipment of zinc liquid casting.
5. a kind of method for extending zinc liquid pump graphite piece service life according to claim 4, it is characterised in that: the zinc
Liquid pump is made of pump case, impeller, transmission shaft, support shaft, pipeline, and is graphite material, and the flow of zinc liquid pump is by frequency control
Device control.
6. a kind of method for extending zinc liquid pump graphite piece service life according to claim 5, it is characterised in that: the zinc
Liquid pump is installed in the closed container being connected with alloy melting furnace chamber.
7. a kind of method for extending zinc liquid pump graphite piece service life according to claim 1, it is characterised in that: described close
Stopped pipe road and the closed connection of zinc liquid pump, the closed conduit are made of steel pipe, liner layer, refractory material, the internal surface of steel pipe
Face is lined with one layer of liner layer made of graphite, and the liner layer is the integrated stone ink material pipeline being inserted in steel pipe, institute
Refractory material tamping is stated to be fixed between liner layer and steel pipe.
8. a kind of method for extending zinc liquid pump graphite piece service life according to claim 1, it is characterised in that: the nitrogen
Gas is passed through nitrogen 5min or so before opening zinc liquid pump by providing with the nitrogen gas tank of closed container airtight connection, in zinc
Liquid pump is passed through 15~25min of nitrogen after opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962684.1A CN109058117A (en) | 2018-08-22 | 2018-08-22 | A method of extending zinc liquid pump graphite piece service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962684.1A CN109058117A (en) | 2018-08-22 | 2018-08-22 | A method of extending zinc liquid pump graphite piece service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109058117A true CN109058117A (en) | 2018-12-21 |
Family
ID=64755766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810962684.1A Pending CN109058117A (en) | 2018-08-22 | 2018-08-22 | A method of extending zinc liquid pump graphite piece service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109058117A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08270590A (en) * | 1995-03-30 | 1996-10-15 | Nippon Carbon Co Ltd | Pump made of artificial graphite for high melting metal |
| CN101406936A (en) * | 2008-11-25 | 2009-04-15 | 株洲冶炼集团股份有限公司 | Enclosed type method and device for conveying zinc alloy liquor and casting zinc alloy ingot |
| CN101947653A (en) * | 2010-09-29 | 2011-01-19 | 株洲火炬工业炉有限责任公司 | Device and method for preparing zinc powder and pulp |
| CN103880282A (en) * | 2014-01-27 | 2014-06-25 | 江苏通鼎光棒技术有限公司 | Furnace cooling method for reducing oxidation probability of graphite center tube |
| CN205398706U (en) * | 2016-01-13 | 2016-07-27 | 宝山钢铁股份有限公司 | A hydrocone type stove nose zinc liquid pump for heating up galvanizing furnace |
| CN205702344U (en) * | 2016-04-27 | 2016-11-23 | 聊城万合工业制造有限公司 | A kind of high-temperature oxidation resistant graphite pipe die |
-
2018
- 2018-08-22 CN CN201810962684.1A patent/CN109058117A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08270590A (en) * | 1995-03-30 | 1996-10-15 | Nippon Carbon Co Ltd | Pump made of artificial graphite for high melting metal |
| CN101406936A (en) * | 2008-11-25 | 2009-04-15 | 株洲冶炼集团股份有限公司 | Enclosed type method and device for conveying zinc alloy liquor and casting zinc alloy ingot |
| CN101947653A (en) * | 2010-09-29 | 2011-01-19 | 株洲火炬工业炉有限责任公司 | Device and method for preparing zinc powder and pulp |
| CN103880282A (en) * | 2014-01-27 | 2014-06-25 | 江苏通鼎光棒技术有限公司 | Furnace cooling method for reducing oxidation probability of graphite center tube |
| CN205398706U (en) * | 2016-01-13 | 2016-07-27 | 宝山钢铁股份有限公司 | A hydrocone type stove nose zinc liquid pump for heating up galvanizing furnace |
| CN205702344U (en) * | 2016-04-27 | 2016-11-23 | 聊城万合工业制造有限公司 | A kind of high-temperature oxidation resistant graphite pipe die |
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| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181221 |
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| WD01 | Invention patent application deemed withdrawn after publication |