CN1005691B - Method for manufacturing cylinder piston ring for steam locomotive - Google Patents
Method for manufacturing cylinder piston ring for steam locomotive Download PDFInfo
- Publication number
- CN1005691B CN1005691B CN86104179.8A CN86104179A CN1005691B CN 1005691 B CN1005691 B CN 1005691B CN 86104179 A CN86104179 A CN 86104179A CN 1005691 B CN1005691 B CN 1005691B
- Authority
- CN
- China
- Prior art keywords
- piston ring
- oil
- cylinder piston
- sintering
- former
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 23
- 238000007654 immersion Methods 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 238000005245 sintering Methods 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 239000010721 machine oil Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 239000010727 cylinder oil Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims 1
- 238000004663 powder metallurgy Methods 0.000 abstract description 13
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 8
- 239000007769 metal material Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 239000003831 antifriction material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Landscapes
- Powder Metallurgy (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention relates to a method for manufacturing a cylinder piston ring for a steam locomotive. The existing steam locomotive cylinder piston ring is cast and molded by cast iron, and the method has the disadvantages of more manufacturing processes, more occupied equipment and labor, energy, high material consumption, low yield and poor wear resistance. The invention adopts the powder metallurgy material containing MOS and the special equipment process to produce the cylinder piston ring, realizes the specialized production, saves metal materials and energy, has better friction resistance than the cast iron piston ring, and prolongs the service life of the piston ring.
Description
The present invention relates to make the method for steam locomotive, belong to the field of making the special shape goods with powder metallurgic method with cylinder piston ring.
The cylinder piston ring that China's steam locomotive uses is cast iron or the cast-iron alloy cylinder piston ring that adopts traditional handicraft to produce, and needs cylinder iron to be cast into earlier the tube material, is processed on lathe then
The garden ring of shape section, average again sawing becomes six sections to form.The shortcoming of this process is: manufacturing process is many, take equipment and the labour is many, cost rate is also low.In addition, make that cylinder iron cylinder piston ring is not wear-resisting yet, change and repair the rate height, the shed repair workload is big.
Stopped using steam locomotive at present abroad, though now both at home and abroad also the someone adopt powdered metallurgical material to make piston ring, referring to " the compound antifriction material of powder metallurgy " (Beijing Inst., of Powder Metallurgy publishes in August, 85) the 7th chapter the 8th joint " piston ring material ", but because that piston ring and geometry, the anti-wear performance of cylinder piston ring all have is different, thereby this kind process and prescription all can not satisfy the technological requirement of steam locomotive usefulness cylinder piston ring.
The objective of the invention is to overcome the shortcoming of prior art, adopt new manufacturing process, realize specialized production, improve the service life of cylinder piston ring, prolong maintenance cycle.
Implementation of the present invention is to adopt powder metallurgical technique, through the various powders prescription is carried out experiment sieving, determines to add kollag MOS
2, with special compacting, sintering and immersion oil method manufacture the low steam locomotive powder metallurgy piston ring of coefficient of friction, and concrete scheme is:
1, according to the work characteristics and the specification requirement of cylinder piston ring and this a pair of fastness of cylinder sleeve,, studies and defines several prescription schemes, suppress test sample piece, rub, the abrasion test, therefrom select excellent according to the antifriction material of powder metallurgy principle.Selected prescription is:
Fe C MOS
2Zinc stearate machine oil
Surplus 0.5～2.0% 1.0～5.0% 0.5～2.0% 0.5%
2, employing is installed in method charging (being that quantitative material evenly is contained in the die cavity).Because the cylinder piston ring complex geometry adopts common mould structure and drawing method, can not get the uniform moulded products spare of density.Design sectional die for solving the present invention of this difficult problem.Be characterized in that former is a split, punch die is large and small two combined types.The difference in height of size block punch die is the poor of the high bottom surface that requires on the cylinder piston ring drawing.Select the forcing press that has side pressure during compacting for use, close tight former earlier, again two blocks of punch dies of size are put in the former simultaneously.At first stress on the bulk punch die, at this moment, the fritter punch die removes own wt, is not subjected to any external force, and therefore, powder will be to fritter punch die one side flow that is not subjected to external force in the former.When large and small two blocks of punch dies simultaneously during pressurized, gauge pressure reaches 210kgf/cm
2During pressure, this moment, the press gross pressure was 380 tons, and pressurize 3～5s gets final product the release demoulding again, and obtains the uniform moulded products spare of density.
3, the sintering of pressed compact spare, sintering temperature are about 1050 ℃～1200 ℃, and blank places on the boat dish, and temperature retention time is 1～1.5 hour, decompose as the sintering protective atmosphere with ammonia.The ball hardness number of sintered part is between 80～110.
4, immersion oil, with the vacuum oil immersion pump immersion oil of heating, it is 150 ℃～300 ℃ that oil is used steam cylinder oil, oily temperature.The oil content of goods spare is 12～18%.
The present invention's advantage compared with prior art is:
1, replaces used cast iron cylinder piston ring with the powder metallurgy cylinder piston ring, can be country the whole year and save the nearly 4000t of cast iron.
2, improve stock utilization, the utilization rate of material powder can reach more than 95%.
3, improve the service life of cylinder piston ring, one cover powder metallurgy cylinder piston ring energy traveling is more than 100,000 kilometers, life-span than cast iron cylinder piston ring is improved 1～2 times, makes steam locomotive not change cylinder piston ring in the phase at a un-wheeling repair, has reduced and has changed the rate of repairing and shed repair workload.Simultaneously, the abrasion of countercylinder cover are not more than the abrasion of cast iron piston ring countercylinder cover.
4, reach under the prerequisite of railway standard set by a ministry 140s in steam locomotive steam chest steam packing, use the powder metallurgy cylinder piston ring, the cylinder steam packing reaches standard set by a ministry 70s.
Now describe one embodiment of the invention in conjunction with the accompanying drawings in detail
Fig. 1: powder metallurgy cylinder piston ring technological process of production figure
Fig. 2: powder metallurgy cylinder piston ring compacting installation diagram
Fig. 3,4: powder metallurgy cylinder piston ring compaction procedure schematic diagram
Fig. 5: A type powder metallurgy cylinder piston ring product figure
Among the figure:
1, former a, iron powder check g, multiple repoussage shape
2, former b, raw material proportioning h, milling head
3, punch die (greatly) c, batch mixing i, pick
4, punch die (little) d, first pressing shaping A, face width
5, dip mold e, sintering H, height overall
6, product piston ring f, vacuum oil immersion h, little limit height
7, mould cover tire S, little limit boss
8, press platform α, angle
A type powder metallurgy cylinder piston ring technological process following (see Fig. 1) 1, iron powder check (a) → 2, raw material proportioning (b) → 3, batch mixing (c) → 4, first molded (d) → 5, sintering (e) → 6, vacuum oil immersion (f) → 7, multiple repoussage shape (g) → 8, milling head (h) → 9, pick (i) now are described in detail as follows master operation:
1, the iron powder sample is tested:
Press the standard test of GB4136 powder used in metallurgy reduced iron powder.
2, materials such as the iron powder of choosing, carbon dust, molybdenum bisuphide, zinc stearate, machine oil are made raw material by following proportioning:
Fe C MOS
2Zinc stearate machine oil
96.2% 0.8% 1.5% 1% 0.5%
3, batch mixing:
Raw material said ratio weighs some, and according to the ability size of batch mixer, the present invention adopts the V-arrangement batch mixer, and rotating speed is 25rPM, and the gross weight of at every turn feeding is no more than 160kg.Method for mixing is:
A, the iron powder of 148kg is divided into 3 parts, every part of weight is respectively 44kg, 22kg and 82kg;
B, the machine oil (80 ℃) that will heat dilution are admixed in the 44kg iron powder and are divided and does two parts of its conventional letters and be " A "
C, with graphite powder, molybdenum bisuphide MOS
2And zinc stearate is admixed, and its symbol is " B " in the iron powder of 22kg;
D, all the other 82kg iron powder branches are done 4 parts of its symbols and are " * ";
E, poured in the batch mixer mixing time 1-3 hour according to the C-A-C-B-C-A-C order.
4, first pressing is shaped:
Because the cylinder piston ring complex geometry adopts common mould structure and drawing method, can not get the uniform moulded products spare of density, for solving this difficult problem, the present invention designs sectional die.Be characterized in former be split (see figure 2) punch die by big (3), little (4) two form, the difference in height of size block punch die is the poor of the high bottom surface that requires on the cylinder piston ring drawing.Select the forcing press that has side pressure during compacting for use, close tight former (1,2) earlier, bigger (3) little (4) two blocks of punch dies are put in the former (1,2) simultaneously.At first stress on bulk (3) punch die, at this moment, fritter (4) punch die is not subjected to any external force except that own wt, and therefore, the interior powder of former (1,2) will be to fritter punch die one side flow (seeing Fig. 3,4) that is not subjected to external force.When big (3), little (4) two blocks of punch dies simultaneously during pressurized, this moment, the gross pressure of press was 380 tons, and gauge pressure should reach 210kgf/cm
23～5 seconds of pressurize again after during pressure, can the release demoulding, and obtain the uniform moulded products spare of density.
5, sintering: the goods of moulding are put into kiln; the control sintering temperature is about 1050 ℃～1200 ℃, and blank places on the smooth boat dish, and temperature retention time is 1～1.5 hour; decompose as the sintering protective atmosphere with ammonia, the goods hardness behind the sintering should reach between the ball hardness number 80-110.
6, immersion oil:
The piston ring of sinter molding is put into oil groove, with the vacuum oil immersion pump immersion oil of heating.Oil adopts steam cylinder oil, and oily temperature is 200 ℃, and immersion oil 30 minutes makes goods spare oil content reach 12～18%.
9, multiple repoussage shape:
Utilize the waste heat of immersion oil to carry out multiple repoussage shape behind the immersion oil, press the specification requirement of drawing regulation at last: (see figure 5) to prevent residual deformation
A H h S α
16
-0.56 +0.00m/m19.5
m/m5
-0.00 +0.30m/m1.5
m/m30°+5′
Carry out pick, by garden arc size stepping (every 2mm is a grade) packing, to satisfy the assembled in situ requirement.
Claims (8)
1, a kind of steam locomotive technology of cylinder piston ring, it is characterized in that adopting the powder metallurgical production technique manufacturing, it comprises: iron powder check (a), raw material ratio (b), batch mixing (c), first pressing shaping (d), sintering (e), vacuum oil immersion (f), multiple repoussage shape (g), milling head (h), pick (i), and its main feature is:
1-1, on the raw material proportioning, be in reduced iron powder, to add carbon, zinc stearate and kollag MOS by proportioning
2, machine oil, concrete proportioning is as follows:
Fe C MOS
2Zinc stearate machine oil
Surplus 0.5～2.0% 1.0～5.0% 0.5～2.0% 0.5%
1-2, on mould structure, adopt split former (1), (2), punch die by big (3), little (4) two form.
1-3, on drawing method, employing has the forcing press of side pressure, close tight former (1), (2) earlier, (3), little (4) two blocks of punch dies are put in former (1), (2) simultaneously greatly again, stress on bulk (3) punch die earlier, make former (1), (2) interior powder to fritter punch die (4) one side flow that are not subjected to external force, to big (3), little (4) two blocks of punch dies while pressurized.
1-4, on pressed compact spare sintering, adopting sintering temperature is 1050 ℃～1200 ℃, temperature retention time is 1～1.5 hour, decomposes with ammonia and makes the sintering protective atmosphere.
1-5, on immersion oil, adopt the vacuum immersion oil of heating, oily temperature is that 150 ℃～300 ℃ oil are used steam cylinder oil, the oil content of goods is 12～18% behind the immersion oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86104179.8A CN1005691B (en) | 1986-07-01 | 1986-07-01 | Method for manufacturing cylinder piston ring for steam locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86104179.8A CN1005691B (en) | 1986-07-01 | 1986-07-01 | Method for manufacturing cylinder piston ring for steam locomotive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86104179A CN86104179A (en) | 1987-04-29 |
| CN1005691B true CN1005691B (en) | 1989-11-08 |
Family
ID=4802375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86104179.8A Expired CN1005691B (en) | 1986-07-01 | 1986-07-01 | Method for manufacturing cylinder piston ring for steam locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1005691B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008645A (en) * | 2012-11-22 | 2013-04-03 | 宁波市群星粉末冶金有限公司 | Preparation method for piston powder metallurgy material of gasoline engine |
| CN103008644A (en) * | 2012-11-22 | 2013-04-03 | 宁波市群星粉末冶金有限公司 | Gasoline engine piston powder metallurgical material |
| CN105522156B (en) * | 2014-10-23 | 2018-01-09 | 东睦新材料集团股份有限公司 | A kind of manufacture method of powder metallurgy silumin compressor piston |
-
1986
- 1986-07-01 CN CN86104179.8A patent/CN1005691B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86104179A (en) | 1987-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105728709A (en) | Preparation method for particle reinforcement metal matrix composite material | |
| CN104139185A (en) | Preparation method for wear-resisting metal ceramic composite material | |
| NL8100518A (en) | METHOD FOR MANUFACTURING A METALLIC SINTER BODY AND FOR CARRYING OUT THE APPARATUS APPARATUS | |
| CN1005691B (en) | Method for manufacturing cylinder piston ring for steam locomotive | |
| CN103332926B (en) | Chlorine oxygen magnesium silicon clay material for inner layers of molds, preparation technology and evaluation method thereof | |
| CN1003718B (en) | Molybdenum-based metal ceramic die material for hot rolling | |
| CN101486582A (en) | Method for producing iron runner ramming mass by recovering waste material at low cost | |
| CN103465347B (en) | Manufacturing method for silicon carbide grinding barrel in grinding equipment | |
| US2598796A (en) | Methods for the reduction and sintering of bodies containing reducible metal compounds | |
| CN1024138C (en) | Phosphorus family wear-resisting cast iron quenching ball and production process thereof | |
| CN101486583A (en) | Iron runner ramming mass | |
| Nakagawa et al. | Sintering and forging of decarbonized cast iron powder | |
| CN2130648Y (en) | Cast-iron abrading-ball with reinforcing rib | |
| Koul et al. | Mold Powder Technology | |
| CN86107658B (en) | Metallic ceramic moulding material for hot processing | |
| Kalner et al. | Characteristics of the Mechanism of Cold Plastic Deformation of Sintered Iron | |
| Shevchuk | Iron of High Service Characteristics and Casting Properties for Machine Tool Building | |
| CN1051592A (en) | Self-lubricating metal-ceramic | |
| Trcka et al. | Mechanization, Automation and Increasing the Effectiveness of Gravity Die Casting | |
| CN116477925A (en) | Manufacturing process method of wear-resistant ceramic | |
| Uetz et al. | Abrasive wear of dry-press molds for the manufacture of refractory brick | |
| PL55258B1 (en) | ||
| CN1068094A (en) | High-grade sealing paste in chips | |
| Smolyakov et al. | Production of Cast Iron Pressure Pipe by Centrifugal Casting | |
| Deng | Reform in Movable Casting Iron Machine With Double Chain Rolling Rollers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |