CN105971934A - Pump body of shield pump - Google Patents
Pump body of shield pump Download PDFInfo
- Publication number
- CN105971934A CN105971934A CN201610542967.1A CN201610542967A CN105971934A CN 105971934 A CN105971934 A CN 105971934A CN 201610542967 A CN201610542967 A CN 201610542967A CN 105971934 A CN105971934 A CN 105971934A
- Authority
- CN
- China
- Prior art keywords
- pump
- pump housing
- carbon steel
- canned motor
- matrix
- 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.)
- Withdrawn
Links
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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/08—Iron group metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a pump body of a shield pump and relates to the technical field of shield pumps. According to the pump body of the shield pump, gray cast iron serves as a base body of the material of the pump body, and metal wire groups formed by high-carbon steel wires are distributed in the base body. The base body is composed of, by mass percentage, 2.5%-3.0% of carbon, 1.0%-1.5% of silicon, 0.8%-1.2% of manganese, 0.1%-0.5% of antimony, 0.04%-0.06% of sulfur and the balance Fe, and the sum of the mass percentages of the above components is 100%. The volume percentage of the high-carbon steel wires in the material ranges from 18% to 25%. The high-carbon steel wires include, by mass percentage, 0.5%-0.8% of C, 0.18%-0.21% of Si, 0.5%-0.7% of Mn, smaller than 0.02% of P, smaller than 0.02% of S and the balance Fe. The pump body of the shield pump is good in ductility.
Description
Technical field
The present invention relates to canned motor pump technical field, particularly to the pump housing of a kind of canned motor pump.
Background technology
Canned motor pump is a kind of unprssurized pump, and pump and driving motor are all sealed in the pressure vessel that a pumped medium is full of, and this pressure vessel only has static seal, and is provided rotating excitation field by an electric wire group and driven rotor.This structure eliminates the sealing device for rotary shaft that conventional centrifugal pump has, therefore can accomplish entirely without leakage.
As the pump housing of canned motor pump, not only the highest to its Structural strength calls, in addition it is also necessary to it has certain plasticity and malleability.The pump housing material commonly used on market is regular gray iron and processes, although the rigidity of structure is good, but ductility is not good enough, works for a long time and be full of cracks easily occur in the coldest weather of first trembling with fear, and service life is shorter.
Summary of the invention
The technical problem to be solved is to provide the pump housing of the good canned motor pump of a kind of ductility.
In order to solve above-mentioned technical problem, the invention provides the pump housing of a kind of canned motor pump, the material of the described pump housing, with grey cast-iron as matrix, is dispersed with the metal clusters formed by high-carbon steel wire in the base, described matrix is made up of following mass percent, carbon 2 .5%-3 .0%, silicon 1 .0%-1 .5%, manganese 0 .8%-1 .2%, antimony 0 .1%-0 .5%, sulfur 0 .04%-0 .06%, remaining is Fe, and the mass percent summation of above each composition is 100%；The percent by volume that high-carbon steel wire used accounts for material is 18-25%；Described high-carbon steel wire is made up of following mass percent, and C is 0.5%～0.8%, and Si is 0.18%～0.21%, and Mn is 0.5-0.7%, P < 0.02%, S
< 0.02%, remaining is Fe.
Preferably, described matrix is also dispersed with compound Mo, Ti granule.
Preferably, described Mo0.3～0.5%, Ti0.08～0.12%.
Preferably, described matrix is also dispersed with compound Cu, Al granule.
Preferably, containing Cu0.30～0.60%, Al0.01～0.03% in described matrix.
The pump housing of a kind of canned motor pump of the present invention, by with grey cast-iron as matrix, is dispersed with the metal clusters formed by high-carbon steel wire in the base, has been greatly reinforced the rigidity of structure and the ductility of the pump housing, and its tensile strength can be promoted to 280-300MPa.
Detailed description of the invention
The following detailed description of the preferred embodiment of the present invention.
Embodiment
1
:
A kind of pump housing of canned motor pump, the material of the described pump housing is with grey cast-iron as matrix, being dispersed with the metal clusters formed by high-carbon steel wire in the base, described matrix is made up of following mass percent, carbon 2 .5%, silicon 1 .0%, manganese 0 .8%, antimony 0 .1%, sulfur 0 .04%, remaining is Fe, and the mass percent summation of above each composition is 100%；The percent by volume that high-carbon steel wire used accounts for material is 18%；Described high-carbon steel wire is made up of following mass percent, and C is 0.5%%, and Si is 0.18%, and Mn is 0.5%, and P is 0.01%, and S is 0.01%, and remaining is Fe.
By the pump housing of the canned motor pump that above-mentioned formula is made, its rigidity of structure and ductility are improved, and its tensile strength can be promoted to 285MPa.
Embodiment
2
:
A kind of pump housing of canned motor pump, the material of the described pump housing is with grey cast-iron as matrix, being dispersed with the metal clusters formed by high-carbon steel wire in the base, described matrix is made up of following mass percent, carbon 3 .0%, silicon 1 .5%, manganese 1 .2%, antimony 0 .5%, sulfur 0 .06%, remaining is Fe, and the mass percent summation of above each composition is 100%；The percent by volume that high-carbon steel wire used accounts for material is 18-25%；Described high-carbon steel wire is made up of following mass percent, and C is 0.8%, and Si is 0.21%, and Mn is 0.7%, and P is 0.01%, and S is 0.01%, and remaining is Fe.
In order to improve the rigidity of the pump housing further, matrix is also dispersed with compound Mo0.3%, Ti0.08%.By the pump housing of the canned motor pump that above-mentioned formula is made, its rigidity of structure and ductility are improved, and its tensile strength can be promoted to 295 ~ 298MPa.
In order to improve the ductility of the pump housing further, matrix is also dispersed with Cu 0.60%, Al 0.03%.
By the pump housing of the canned motor pump that above-mentioned formula is made, its rigidity of structure and ductility are improved, and its tensile strength can be promoted to 285 ~ 290MPa.
Embodiment
3
:
A kind of pump housing of canned motor pump, the material of the described pump housing is with grey cast-iron as matrix, being dispersed with the metal clusters formed by high-carbon steel wire in the base, described matrix is made up of following mass percent, carbon 2 .8%%, silicon 1 .2%, manganese 1 .0%, antimony 0 .3%, sulfur 0 .05%, remaining is Fe, and the mass percent summation of above each composition is 100%；The percent by volume that high-carbon steel wire used accounts for material is 20%；Described high-carbon steel wire is made up of following mass percent, and C is 0.6%, and Si is 0.20%, and Mn is 0.6%, and P is 0.01%, and S is 0.01%, and remaining is Fe.
In order to improve the rigidity of the pump housing further, matrix is also dispersed with compound Mo0.5%, Ti0.12%.By the pump housing of the canned motor pump that above-mentioned formula is made, its rigidity of structure and ductility are improved, and its tensile strength can be promoted to 285 ~ 288MPa.
In order to improve the ductility of the pump housing further, matrix is also dispersed with Cu 0.60%, Al 0.03%.
By the pump housing of the canned motor pump that above-mentioned formula is made, its rigidity of structure and ductility are improved, and its tensile strength can be promoted to 280 ~ 290MPa.
Above-described is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, it is also possible to make some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (5)
1. the pump housing of a canned motor pump, it is characterized in that: the material of the described pump housing is with grey cast-iron as matrix, being dispersed with the metal clusters formed by high-carbon steel wire in the base, described matrix is made up of following mass percent, carbon 2 .5%-3 .0%, silicon 1 .0%-1 .5%, manganese 0 .8%-1 .2%, antimony 0 .1%-0 .5%, sulfur 0 .04%-0 .06%, remaining is Fe, and the mass percent summation of above each composition is 100%；The percent by volume that high-carbon steel wire used accounts for material is 18-25%；Described high-carbon steel wire is made up of following mass percent, and C is 0.5%～0.8%, and Si is 0.18%～0.21%, and Mn is that < < 0.02%, remaining is Fe for 0.02%, S for 0.5-0.7%, P.
2. according to the pump housing of the canned motor pump described in claim 1, it is characterised in that: described matrix is also dispersed with compound Mo, Ti granule.
The pump housing of canned motor pump the most according to claim 2, it is characterised in that described Mo0.3～0.5%, Ti0.08～0.12%.
4. according to the pump housing of the canned motor pump described in claim 1, it is characterised in that: described matrix is also dispersed with compound Cu, Al granule.
The pump housing of canned motor pump the most according to claim 4, it is characterised in that: containing Cu0.30～0.60%, Al0.01～0.03% in described matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610542967.1A CN105971934A (en) | 2016-07-12 | 2016-07-12 | Pump body of shield pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610542967.1A CN105971934A (en) | 2016-07-12 | 2016-07-12 | Pump body of shield pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105971934A true CN105971934A (en) | 2016-09-28 |
Family
ID=56952116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610542967.1A Withdrawn CN105971934A (en) | 2016-07-12 | 2016-07-12 | Pump body of shield pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105971934A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033844A (en) * | 1988-10-11 | 1989-07-12 | 云南工学院 | High strength grey cast iron with casting bainite |
| US20060130946A1 (en) * | 2004-12-22 | 2006-06-22 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | High Carbon steel wire material having excellent wire drawability and manufacturing process thereof |
| CN102051559A (en) * | 2011-01-14 | 2011-05-11 | 南京信息工程大学 | Wearable grey cast iron material and preparation method thereof |
| CN102071381A (en) * | 2011-01-14 | 2011-05-25 | 南京信息工程大学 | Heat-resistance grey cast iron material and preparation method |
| CN103695760A (en) * | 2014-01-07 | 2014-04-02 | 山东建筑大学 | Alloy grey cast iron material for medium and high-pressure pump bodies |
-
2016
- 2016-07-12 CN CN201610542967.1A patent/CN105971934A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033844A (en) * | 1988-10-11 | 1989-07-12 | 云南工学院 | High strength grey cast iron with casting bainite |
| US20060130946A1 (en) * | 2004-12-22 | 2006-06-22 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | High Carbon steel wire material having excellent wire drawability and manufacturing process thereof |
| CN102051559A (en) * | 2011-01-14 | 2011-05-11 | 南京信息工程大学 | Wearable grey cast iron material and preparation method thereof |
| CN102071381A (en) * | 2011-01-14 | 2011-05-25 | 南京信息工程大学 | Heat-resistance grey cast iron material and preparation method |
| CN103695760A (en) * | 2014-01-07 | 2014-04-02 | 山东建筑大学 | Alloy grey cast iron material for medium and high-pressure pump bodies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160928 |