CN102974824A - Method for preparing stator and rotor of homogeneous mixing pump - Google Patents
Method for preparing stator and rotor of homogeneous mixing pump Download PDFInfo
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- CN102974824A CN102974824A CN2012104905600A CN201210490560A CN102974824A CN 102974824 A CN102974824 A CN 102974824A CN 2012104905600 A CN2012104905600 A CN 2012104905600A CN 201210490560 A CN201210490560 A CN 201210490560A CN 102974824 A CN102974824 A CN 102974824A
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Abstract
The invention relates to a method for preparing a stator and a rotor of a homogeneous mixing pump. The stator and the rotor comprise are made of carbon, titanium, boron, chromium, manganese, molybdenum, copper, vanadium, nickel, and the balance of ferrum and inevitable impurities, and are manufactured through the processes of material mixing, pressing, sintering, boriding and the like. According to the technical scheme disclosed by the invention, elements of manganese and vanadium are added, and by the boriding treatment, the strength and the wear-resisting property of the stator and the rotor are improved, and the service life of the stator and the rotor is prolonged.
Description
Technical field
The invention belongs to the mixing pump field, refer to especially a kind of stator and rotor preparation method of homogeneous mixing pump.
Background technology
The homogeneous mixing pump is to utilize the high speed of the stator be arranged in the pump case and the rotor under engine drives to relatively rotate and the shearing force that produces, the material that enters in the pump is carried out fragmentation and mixed uniformly pump, be widely used in the industries such as medicine, food, environmental protection.
The stator of the homogeneous mixing pump that now uses and rotor adopt the casting technique manufacturing, rotor and stator are in the process that material is mixed, the energy of engine is passed to material by stator and rotor to the friction of material, therefore, stator and rotor can be subject to very large friction, particularly for a long time operation, it also is the easily worn part of homogeneous mixing pump, often need to change, otherwise, because reduce mixing and the crushing effect of material in the situation that the gap between stator and the rotor increases because of friction.
Summary of the invention
The stator and the rotor material that the purpose of this invention is to provide a kind of homogeneous mixing pump by the technical program, can improve the rub resistance ability of rotor and stator, effectively the service life of Extending Rotor and stator.
The present invention is achieved by the following technical solutions:
A kind of stator of homogeneous mixing pump and rotor preparation method:
Batching, be that same, the vanadium of 0.25-0.3% of the manganese of the boron of the carbon of 2.2-2.4%, the titanium of 0.03-0.035%, 2.3-2.5%, the chromium of 0.015-0.023%, 1.3-1.5%, the molybdenum of 1.1-1.3%, 0.8-1.0%, the nickel of 0.03-0.05%, surplus are that iron and inevitable impurity calculate batching by weight percentage;
Batch mixing, with the powder of said mixture add be the 5-8% zinc stearate by the mix powder weight ratio after in batch 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 boriding medium 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 ℃ glowing furnace 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 second stage 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 stator and rotor material, its composition is that the copper of the manganese of the boron of the carbon of 2.2-2.4%, the titanium of 0.03-0.035%, 2.3-2.5%, the chromium of 0.015-0.023%, 1.3-1.5%, the molybdenum of 1.1-1.3%, 0.8-1.0%, the vanadium of 0.25-0.3%, the nickel of 0.03-0.05%, the zinc of 0.3-0.5%, surplus are iron and inevitable impurity by weight percentage.
Described boriding medium 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 potassium nitrate and sodium nitrate.
The beneficial effect that the present invention compares with prior art is:
Process by in technical solution of the present invention, adding manganese and v element, reaching by boronising, improved intensity and the anti-wear performance of stator and rotor, the service life of having improved stator and rotor.
The specific 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
Its preparation method is,
Batching, be that 2.2% carbon, 0.03% titanium, 2.3% boron, 0.015% chromium, 1.3% manganese, 1.1% molybdenum, 0.8% copper, 0.25% vanadium, 0.03% nickel, surplus are that iron and inevitable impurity calculate batching by weight percentage;
Batch mixing, with the powder of said mixture after adding 5% zinc stearate in batch mixer batch mixing 30 minutes;
Suppress, suppress under 650MPa with mould and make base substrate 20 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 boriding medium 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 ℃ glowing furnace 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 second stage 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 boriding medium 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 potassium nitrate and sodium nitrate.
In other embodiments of the invention, employed boriding medium and quenching medium are identical, so no longer carry out repeat specification among the embodiment afterwards.
Embodiment 2
Its preparation method is,
Batching, be that 2.4% carbon, 0.035% titanium, 2.5% boron, 0.023% chromium, 1.5% manganese, 1.3% molybdenum, 1.0% copper, 0.3% vanadium, 0.05% nickel, surplus are that iron and inevitable impurity calculate batching by weight percentage;
Batch mixing, with the powder of said mixture after adding 8% zinc stearate in batch mixer batch mixing 60 minutes;
Suppress, suppress under 750MPa 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 200MPa pressure, 1250-1350 ℃ of lower sintering 2 hours, cools to 450-480 ℃ again;
Boronising is put into boriding medium 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 ℃ glowing furnace 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 second stage 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
Its preparation method is,
Batching, be that 2.25% carbon, 0.033% titanium, 2.4% boron, 0.018% chromium, 1.45% manganese, 1.12% molybdenum, 0.93% copper, 0.28% vanadium, 0.04% nickel, surplus are that iron and inevitable impurity calculate batching by weight percentage;
Batch mixing, with the powder of said mixture after adding 6% zinc stearate in batch mixer batch mixing 45 minutes;
Suppress, suppress under 700MPa 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 180MPa pressure, 1250-1350 ℃ of lower sintering 1.5 hours, cools to 450-480 ℃ again;
Boronising is put into boriding medium 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 ℃ glowing furnace 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 second stage 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 (4)
1. the stator of a homogeneous mixing pump and rotor preparation method is characterized in that:
Batching, be that the copper of the manganese of the boron of the carbon of 2.2-2.4%, the titanium of 0.03-0.035%, 2.3-2.5%, the chromium of 0.015-0.023%, 1.3-1.5%, the molybdenum of 1.1-1.3%, 0.8-1.0%, the vanadium of 0.25-0.3%, the nickel of 0.03-0.05%, surplus are that iron and inevitable impurity calculate batching by weight percentage;
Batch mixing, with the powder of said mixture add be the 5-8% zinc stearate by the mix powder weight ratio after in batch 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 boriding medium 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 ℃ glowing furnace 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 second stage 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.
2. the stator of homogeneous mixing pump according to claim 2 and rotor preparation method, it is characterized in that: stator and rotor material, it is characterized in that: its composition is that the copper of the manganese of the boron of the carbon of 2.2-2.4%, the titanium of 0.03-0.035%, 2.3-2.5%, the chromium of 0.015-0.023%, 1.3-1.5%, the molybdenum of 1.1-1.3%, 0.8-1.0%, the vanadium of 0.25-0.3%, the nickel of 0.03-0.05%, the zinc of 0.3-0.5%, surplus are iron and inevitable impurity by weight percentage.
3. the stator of homogeneous mixing pump according to claim 1 and rotor preparation method is characterized in that: described boriding medium is 25% borax, 11% potassium fluoborate and the graphite of surplus by weight percentage.
4. the stator of homogeneous mixing pump according to claim 1 and rotor preparation method is characterized in that: the salt bath quenching agent of described quenching medium for being comprised of by 1: 1 weight ratio potassium nitrate and sodium nitrate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537667A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy engine oil delivery pump rotor and manufacturing method thereof |
| CN104801702A (en) * | 2015-03-18 | 2015-07-29 | 安徽恒均粉末冶金科技股份有限公司 | Powder metallurgy stator of vane steering pump and manufacturing process thereof |
| CN105755362A (en) * | 2016-02-23 | 2016-07-13 | 湖南省冶金材料研究院 | High-carbon and high-chromium powder metallurgy material and preparation method thereof |
| CN106119717A (en) * | 2016-06-28 | 2016-11-16 | 无锡新大力电机有限公司 | A kind of novel permanent magnet motor stator manufacture of casing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537667A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy engine oil delivery pump rotor and manufacturing method thereof |
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| CN105755362A (en) * | 2016-02-23 | 2016-07-13 | 湖南省冶金材料研究院 | High-carbon and high-chromium powder metallurgy material and preparation method thereof |
| CN105755362B (en) * | 2016-02-23 | 2017-09-01 | 湖南省冶金材料研究院 | A kind of high carbon and chromium powder metallurgy high-abrasive material and preparation method thereof |
| CN106119717A (en) * | 2016-06-28 | 2016-11-16 | 无锡新大力电机有限公司 | A kind of novel permanent magnet motor stator manufacture of casing |
| CN106119717B (en) * | 2016-06-28 | 2018-01-26 | 无锡新大力电机有限公司 | A kind of permanent magnet motor stator manufacture of casing |
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Application publication date: 20130320 |