CN1082676A - The rare-earth Nb-Mo high carbon high chromium alloy cast iron composite mud slurry pump cylinder sleeve - Google Patents
The rare-earth Nb-Mo high carbon high chromium alloy cast iron composite mud slurry pump cylinder sleeve Download PDFInfo
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- CN1082676A CN1082676A CN 92106638 CN92106638A CN1082676A CN 1082676 A CN1082676 A CN 1082676A CN 92106638 CN92106638 CN 92106638 CN 92106638 A CN92106638 A CN 92106638A CN 1082676 A CN1082676 A CN 1082676A
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- slurry pump
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- pump cylinder
- cast iron
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Abstract
The rare-earth Nb-Mo high carbon rich chromium cast iron composite mud slurry pump cylinder jacket of the present invention's development adopts the high alloy iron of novel high-wearing feature energy to make interior cover, and common medium-carbon steel is made overcoat, press fit assembles after machining, and cost is low, improves friction durability more than 1 times, technology is reliable, produces stable.
Description
The invention belongs to casting alloy and melting and casting technical field.Be suitable for oil field welldrilling high-wearing feature energy cast iron mud slurry pump cylinder jacket, this material also is applicable to some abrasion resistant parts of industries such as machinery, electric power, cement and mine.
As everyone knows, the php slurry pump is the visual plant of drilling well, and cylinder sleeve is slurry pump " heart " parts, not only requires high strength, and requires high-wearing feature energy and decay resistance.U.S. Ames storehouse company produces cylinder sleeve working life is more than 1000 hours, and the cylinder sleeve that China produces is at 300～500 hours, and its material is that alloyed steel is through heat treatment or thermo-chemical treatment, as carburizing, nitriding, boronising carburizing etc.; Or bimetallic alloy cast iron; But all less than U.S.'s import cylinder sleeve.Had a strong impact on the raising of oil drilling efficient, particularly influenced the employing of ultrahigh pressure new drilling and popularize.
In order to address the above problem, developed a kind of rare-earth Nb-Mo high carbon high chromium alloy cast iron composite mud slurry pump cylinder sleeve of new material in 1985, reach its working life and surpass import cylinder sleeve level, raw material are based on domestic, cost is well below the import cylinder sleeve, and the garden has completely solved low problem of mud slurry pump cylinder jacket life-span.
Specify as follows:
One,, can guarantee that again the overall technology that satisfies mud slurry pump cylinder jacket requires (2000-2500N/cm in order to give full play to the antiwear property of the new material of rare-earth Nb-Mo high carbon high chromium alloy cast iron
2Down work of high pressure), adopt the bimetal manufacturing, that is: requiring the interior cover material of high-wearing feature, corrosion resistance is rare-earth Nb-Mo high carbon high chromium alloy cast iron; Requiring the lagging material of high-intensity high-tenacity is middle carbon cast steel.Be assembled into one with the mechanical-hydraulic cooperation after the machining.
Two, interior cover composition, performance:
(1) Chemical composition: (%)
C Si Mn P S Cr Mo
3.5-4.2 0.5-0.8 0.6-1.0＜0.05＜0.05 15-26 1.0-3.0
Cu Nb Re Fe
0.8-1.2 0.1-1.0 0.01-0.05 all the other
(2) mechanical property:
Impact toughness 5-8J/cm
2(as cast condition)
Resistance to flexure 400-600N/mm
2(as cast condition)
Hardness HRc50-56 (as cast condition)
38-45 (annealing back)
62-68 (quenching)
Three, technological process: interior cover and overcoat are made respectively
(1) cover in: raw material preparation → electro-smelting → centrifugal pressure casting → soft annealing → roughing → quenching, tempering → semi finishing → to be assembled with overcoat.
(2) overcoat: raw material preparation → electro-smelting → centrifugal or sand casting process → roughing → normalized treatment → semi finishing → to be assembled with interior cover.Interior cover carries out fine finishing and grinding after assembling with overcoat again, passed examination post-coat lacquer packing.
Four, cover in the New Type Material high alloy iron, smelting technology is easy to grasp.Adopt the double refining technology, useless cover and " smear metal " absolutely reuse, stock utilization reaches more than 95%, has improved quality, has reduced cost.Centrifuge method casting cylinder sleeve, the inherent quality height, the product yield height is almost 100%, and reject rate is very low.
Claims (2)
1, a kind of rare-earth Nb-Mo high carbon high chromium alloy cast iron composite mud slurry pump cylinder sleeve that is used for abrasion resistant part is characterized in that being made respectively by interior cover and overcoat be assembled into one after machining.
2, according to overlapping composition (%) characteristics in the described high alloy iron mud slurry pump cylinder jacket of claim 1 be: C3.5-4.2 Si0.4-0.9 Cr15-26 Mo1.0-3.0 Nb0.1-1.0 Re0.01-0.05 Mn0.6-1.0 P＜0.05 S＜0.05Fe all the other
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106638 CN1082676A (en) | 1992-08-07 | 1992-08-07 | The rare-earth Nb-Mo high carbon high chromium alloy cast iron composite mud slurry pump cylinder sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106638 CN1082676A (en) | 1992-08-07 | 1992-08-07 | The rare-earth Nb-Mo high carbon high chromium alloy cast iron composite mud slurry pump cylinder sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1082676A true CN1082676A (en) | 1994-02-23 |
Family
ID=4942293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106638 Pending CN1082676A (en) | 1992-08-07 | 1992-08-07 | The rare-earth Nb-Mo high carbon high chromium alloy cast iron composite mud slurry pump cylinder sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1082676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392248C (en) * | 2005-12-13 | 2008-06-04 | 赵克中 | Cyliinder jacket of slurry pump and preparation method thereof |
| CN100425830C (en) * | 2002-08-30 | 2008-10-15 | 株式会社久保田 | Mud pressure pump and method for manufacturing mud pressure cylinder |
-
1992
- 1992-08-07 CN CN 92106638 patent/CN1082676A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425830C (en) * | 2002-08-30 | 2008-10-15 | 株式会社久保田 | Mud pressure pump and method for manufacturing mud pressure cylinder |
| CN100392248C (en) * | 2005-12-13 | 2008-06-04 | 赵克中 | Cyliinder jacket of slurry pump and preparation method thereof |
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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 | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |