CN102978522A - Cam rotor pump rotor material and preparation method - Google Patents
Cam rotor pump rotor material and preparation method Download PDFInfo
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- CN102978522A CN102978522A CN2012104905761A CN201210490576A CN102978522A CN 102978522 A CN102978522 A CN 102978522A CN 2012104905761 A CN2012104905761 A CN 2012104905761A CN 201210490576 A CN201210490576 A CN 201210490576A CN 102978522 A CN102978522 A CN 102978522A
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Abstract
The invention relates to a cam rotor pump rotor material and a preparation method. The material comprises the following components by weight percent: 0.6-1.2% of carbon, 0.3-0.65% of silicon, 0.03-0.035% of titanium, 0.04-0.047% of boron, 0.015-0.023% of chromium, 0.32-0.35% of manganese, 0.02-0.025% of molybdenum, 0.3-0.5% of zinc, 0.0001-0.0005% of cerium and the balance of iron and inevitable impurities. The material and the preparation method have the beneficial effects that the problem of compactness caused by casting can be effectively avoided; the efficiency of the cam rotor pump is ensured; and the wear resistance of the rotors is ensured through boriding treatment.
Description
Technical field
The invention belongs to the pump field, refer to especially a kind of rotor material for lobed rotor pump and preparation method.
Background technology
Lobed rotor pump is the multi-purpose bidirectional volumetric pump, and lobed rotor pump adopts two rotors that are synchronized with the movement, and rotor carries out transmission by a pair of external synchronous gear box.Rotor carries out the synchronous backward rotation under the drive of transmission shaft, thereby forms higher vacuum tightness and blowdown presssure between two rotors.Maintain certain gap between the rotor of lobe pump and the rotor, without frictional coefficient, dismounting is simple, can guarantee the continuity maintainability and without leak time, long service life.But also there is defective in lobed rotor pump, and namely transfer pressure is lower, is generally below the 1.6MPa, and in transmission course, rotor is transmitted the generation that frictional force is arranged between the material together, and produces easily cavitation.
The rotor of existing lobed rotor pump adopts casting technique to produce basically, but casting technique has the compactness problem of foundry goods, when rotor and be transferred the appearance that frictional force between the material can cause sand holes, the vacuum tightness of impact between two rotors affects the transmission of pressure of material.
Summary of the invention
The purpose of this invention is to provide a kind of lobed rotor pump rotor material, by the technical program, can effectively avoid because the compactness problem appears in casting, guarantee the efficient of lobed rotor pump.
The present invention is achieved by the following technical solutions:
A kind of lobed rotor pump rotor material, its composition is by weight percentage, the chromium of the titanium of the carbon of 0.6-1.2%, the silicon of 0.3-0.65%, 0.03-0.035%, the boron of 0.04-0.047%, 0.015-0.023%, the manganese of 0.32-0.35%, the molybdenum of 0.02-0.025%, the zinc of 0.3-0.5%, the cerium of 0.0001-0.0005%, surplus is iron and inevitable impurity.
Described cerium is that to contain cerium be that the cerium-iron alloy mode of 10% weight percent adds.
Described preparation method is:
Batching, be by weight percentage, the chromium of the titanium of the carbon of 0.6-1.2%, the silicon of 0.3-0.65%, 0.03-0.035%, the boron of 0.04-0.047%, 0.015-0.023%, the manganese of 0.32-0.35%, the molybdenum of 0.02-0.025%, the cerium of 0.0001-0.0005%, surplus are that iron and inevitable impurity calculate batching;
Batch mixing was with the powder of said mixture after adding Zinic stearas in mixer batch mixing 30-60 minute;
Compacting is suppressed 10-60 with mould and is made base substrate second under 650-750MPa;
Sintering is fired in special furnace, is 650-700 ℃ of pre-burning 2 hours in temperature at first, and then band heat is suppressed shaping under 150-200MPa pressure, at 1250-1350 ℃ of lower sintering 1-2 hour, cools to 450-480 ℃ again;
Boronising is put into boronizing agent with base substrate and is carried out the boronising processing;
Quench, quench the base substrate after will processing through boronising is incubated 2 hours in 780-850 ℃ quenching furnance after, quench minute two stages, first stage is that constant temperature is quenched to 550-580 ℃; Quench rates is no more than 15 ℃/minute, and subordinate phase is that nature quenches, be quenched to 130-150 ℃ after, enter annealing furnace;
Insulation was cooled to 130-150 after 2 hours in 550-600 ℃ of annealing furnace; Insulation is 3 hours after being tempered to 200-220 ℃ again, cooling.
Described boronizing agent is 25% borax, 11% potassium fluoborate and the graphite of surplus by weight percentage.
Described quenching medium is the salt bath quenching agent that is comprised of by 1: 1 weight ratio saltpetre and SODIUMNITRATE.
The beneficial effect that the present invention compares with prior art is:
By the technical program, can effectively avoid because the compactness problem appears in casting, guarantee the efficient of lobed rotor pump.And by the boronising processing, guaranteed the wear resisting property of rotor.
Embodiment
Below describe technical scheme of the present invention in detail by specific embodiment, should be understood that following embodiment only is used for explaining the present invention and can not be interpreted as to be limitation of the present invention.
Embodiment 1
Described preparation method is:
Batching, be by weight percentage, 0.6% carbon, 0.3% silicon, 0.03% titanium, 0.04% boron, 0.015% chromium, 0.32% manganese, 0.02% molybdenum, 0.0001% cerium, surplus is that iron and inevitable impurity calculate batching; Described cerium is that to contain cerium be that the cerium-iron alloy mode of 10% weight percent adds;
Batch mixing, with the powder of said mixture after adding Zinic stearas in mixer batch mixing 30 minutes;
Suppress, suppress under 650MPa with mould and make base substrate 30 seconds;
Sintering is fired in special furnace, is 650-700 ℃ of pre-burning 2 hours in temperature at first, and then band heat is suppressed shaping under 150MPa pressure, 1250-1350 ℃ of lower sintering 2 hours, cools to 450-480 ℃ again;
Boronising is put into boronizing agent with base substrate and is carried out the boronising processing;
Quench, quench the base substrate after will processing through boronising is incubated 2 hours in 780-850 ℃ quenching furnance after, quench minute two stages, first stage is that constant temperature is quenched to 550-580 ℃; Quench rates is no more than 15 ℃/minute, and subordinate phase is that nature quenches, be quenched to 130-150 ℃ after, enter annealing furnace;
Insulation was cooled to 130-150 after 2 hours in 550-600 ℃ of annealing furnace; Insulation is 3 hours after being tempered to 200-220 ℃ again, cooling.
Described boronizing agent is 25% borax, 11% potassium fluoborate and the graphite of surplus by weight percentage.
Described quenching medium is the salt bath quenching agent that is comprised of by 1: 1 weight ratio saltpetre and SODIUMNITRATE.
In following examples of the present invention, selected boronizing agent is identical with quenching medium, just no longer carries out repeat specification.
Embodiment 2
Described preparation method is:
Batching, be by weight percentage, 1.2% carbon, 0.65% silicon, 0.035% titanium, 0.047% boron, 0.023% chromium, 0.35% manganese, 0.025% molybdenum, 0.0005% cerium, surplus is that iron and inevitable impurity calculate batching; Described cerium is that to contain cerium be that the cerium-iron alloy mode of 10% weight percent adds;
Batch mixing, with the powder of said mixture after adding Zinic stearas in mixer batch mixing 60 minutes;
Suppress, suppress under 750MPa with mould and make base substrate 45 seconds;
Sintering is fired in special furnace, is 650-700 ℃ of pre-burning 2 hours in temperature at first, and then band heat is suppressed shaping under 200MPa pressure, 1250-1350 ℃ of lower sintering 2 hours, cools to 450-480 ℃ again;
Boronising is put into boronizing agent with base substrate and is carried out the boronising processing;
Quench, quench the base substrate after will processing through boronising is incubated 2 hours in 780-850 ℃ quenching furnance after, quench minute two stages, first stage is that constant temperature is quenched to 550-580 ℃; Quench rates is no more than 15 ℃/minute, and subordinate phase is that nature quenches, be quenched to 130-150 ℃ after, enter annealing furnace;
Insulation was cooled to 130-150 after 2 hours in 550-600 ℃ of annealing furnace; Insulation is 3 hours after being tempered to 200-220 ℃ again, cooling.
Embodiment 3
Described preparation method is:
Batching, be by weight percentage, the chromium of the titanium of the carbon of 0.6-1.2%, the silicon of 0.3-0.65%, 0.03-0.035%, the boron of 0.04-0.047%, 0.015-0.023%, the manganese of 0.32-0.35%, the molybdenum of 0.02-0.025%, the zinc of 0.3-0.5%, the cerium of 0.0001-0.0005%, surplus are that iron and inevitable impurity calculate batching; Described cerium is that to contain cerium be that the cerium-iron alloy mode of 10% weight percent adds;
Batch mixing, with the powder of said mixture after adding Zinic stearas in mixer batch mixing 60 minutes;
Suppress, suppress under 700MPa with mould and make base substrate 60 seconds;
Sintering is fired in special furnace, is 650-700 ℃ of pre-burning 2 hours in temperature at first, and then band heat is suppressed shaping under 180MPa pressure, 1250-1350 ℃ of lower sintering 2 hours, cools to 450-480 ℃ again;
Boronising is put into boronizing agent with base substrate and is carried out the boronising processing;
Quench, quench the base substrate after will processing through boronising is incubated 2 hours in 780-850 ℃ quenching furnance after, quench minute two stages, first stage is that constant temperature is quenched to 550-580 ℃; Quench rates is no more than 15 ℃/minute, and subordinate phase is that nature quenches, be quenched to 130-150 ℃ after, enter annealing furnace;
Insulation was cooled to 130-150 after 2 hours in 550-600 ℃ of annealing furnace; Insulation is 3 hours after being tempered to 200-220 ℃ again, cooling.
Claims (5)
1. lobed rotor pump rotor material, it is characterized in that: its composition is by weight percentage, the chromium of the titanium of the carbon of 0.6-1.2%, the silicon of 0.3-0.65%, 0.03-0.035%, the boron of 0.04-0.047%, 0.015-0.023%, the manganese of 0.32-0.35%, the molybdenum of 0.02-0.025%, the zinc of 0.3-0.5%, the cerium of 0.0001-0.0005%, surplus is iron and inevitable impurity.
2. lobed rotor pump rotor material according to claim 1 is characterized in that: described cerium is that to contain cerium be that the cerium-iron alloy mode of 10% weight percent adds.
3. a lobed rotor pump rotor material preparation method is it is characterized in that:
Batching, be by weight percentage, the chromium of the titanium of the carbon of 0.6-1.2%, the silicon of 0.3-0.65%, 0.03-0.035%, the boron of 0.04-0.047%, 0.015-0.023%, the manganese of 0.32-0.35%, the molybdenum of 0.02-0.025%, the cerium of 0.0001-0.0005%, surplus are that iron and inevitable impurity calculate batching;
Batch mixing was with the powder of said mixture after adding Zinic stearas in mixer batch mixing 30-60 minute;
Compacting is suppressed 10-60 with mould and is made base substrate second under 650-750MPa;
Sintering is fired in special furnace, is 650-700 ℃ of pre-burning 2 hours in temperature at first, and then band heat is suppressed shaping under 150-200MPa pressure, at 1250-1350 ℃ of lower sintering 1-2 hour, cools to 450-480 ℃ again;
Boronising is put into boronizing agent with base substrate and is carried out the boronising processing;
Quench, quench the base substrate after will processing through boronising is incubated 2 hours in 780-850 ℃ quenching furnance after, quench minute two stages, first stage is that constant temperature is quenched to 550-580 ℃; Quench rates is no more than 15 ℃/minute, and subordinate phase is that nature quenches, be quenched to 130-150 ℃ after, enter annealing furnace;
Insulation was cooled to 130-150 after 2 hours in 550-600 ℃ of annealing furnace; Insulation is 3 hours after being tempered to 200-220 ℃ again, cooling.
4. lobed rotor pump rotor material preparation method according to claim 3 is characterized in that: described boronizing agent is 25% borax, 11% potassium fluoborate and the graphite of surplus by weight percentage.
5. lobed rotor pump rotor material preparation method according to claim 3 is characterized in that: the salt bath quenching agent of described quenching medium for being comprised of by 1: 1 weight ratio saltpetre and SODIUMNITRATE.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104905761A CN102978522A (en) | 2012-11-22 | 2012-11-22 | Cam rotor pump rotor material and preparation method |
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| CN2012104905761A CN102978522A (en) | 2012-11-22 | 2012-11-22 | Cam rotor pump rotor material and preparation method |
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| CN102978522A true CN102978522A (en) | 2013-03-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990067A (en) * | 2012-11-22 | 2013-03-27 | 宁波得利时泵业有限公司 | Rotor of cam rotor pump and preparation method thereof |
| CN103667941A (en) * | 2013-11-08 | 2014-03-26 | 张超 | Alloy steel material for rotor of cam rotor pump and preparation method thereof |
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| CN1439738A (en) * | 2003-03-28 | 2003-09-03 | 西安交通大学 | Multielement high-chromium wear-resisting cast-iron sieve-plate and production thereof |
| JP2007191730A (en) * | 2006-01-17 | 2007-08-02 | Nippon Steel Corp | Steel for welded structure with excellent seawater corrosion resistance, and corrosion protection method for ship ballast tank using the same |
| JP2008174776A (en) * | 2007-01-17 | 2008-07-31 | Nippon Steel Corp | High-strength cold-rolled steel sheet excellent in stretch-flange formability and impact energy absorption characteristic and its production method |
| WO2011122134A1 (en) * | 2010-03-30 | 2011-10-06 | 新日本製鐵株式会社 | Steel for high frequency hardening, roughly molded material for high frequency hardening and process for production thereof, and high-frequency-hardened steel member |
| CN102407333A (en) * | 2011-11-08 | 2012-04-11 | 益阳市俊淞汽车配件制造有限公司 | Powder metallurgy stator of car steering pump and production method thereof |
| JP2012204486A (en) * | 2011-03-24 | 2012-10-22 | Hitachi Metals Ltd | SURFACE-MODIFIED R-Fe-B BASED SINTERED MAGNET AND PRODUCTION METHOD THEREFOR |
| CN102978523A (en) * | 2012-11-22 | 2013-03-20 | 宁波得利时泵业有限公司 | Cam rotor pump rotor material |
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2012
- 2012-11-22 CN CN2012104905761A patent/CN102978522A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439738A (en) * | 2003-03-28 | 2003-09-03 | 西安交通大学 | Multielement high-chromium wear-resisting cast-iron sieve-plate and production thereof |
| JP2007191730A (en) * | 2006-01-17 | 2007-08-02 | Nippon Steel Corp | Steel for welded structure with excellent seawater corrosion resistance, and corrosion protection method for ship ballast tank using the same |
| JP2008174776A (en) * | 2007-01-17 | 2008-07-31 | Nippon Steel Corp | High-strength cold-rolled steel sheet excellent in stretch-flange formability and impact energy absorption characteristic and its production method |
| WO2011122134A1 (en) * | 2010-03-30 | 2011-10-06 | 新日本製鐵株式会社 | Steel for high frequency hardening, roughly molded material for high frequency hardening and process for production thereof, and high-frequency-hardened steel member |
| JP2012204486A (en) * | 2011-03-24 | 2012-10-22 | Hitachi Metals Ltd | SURFACE-MODIFIED R-Fe-B BASED SINTERED MAGNET AND PRODUCTION METHOD THEREFOR |
| CN102407333A (en) * | 2011-11-08 | 2012-04-11 | 益阳市俊淞汽车配件制造有限公司 | Powder metallurgy stator of car steering pump and production method thereof |
| CN102978523A (en) * | 2012-11-22 | 2013-03-20 | 宁波得利时泵业有限公司 | Cam rotor pump rotor material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990067A (en) * | 2012-11-22 | 2013-03-27 | 宁波得利时泵业有限公司 | Rotor of cam rotor pump and preparation method thereof |
| CN103667941A (en) * | 2013-11-08 | 2014-03-26 | 张超 | Alloy steel material for rotor of cam rotor pump and preparation method thereof |
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Application publication date: 20130320 |