CN105013855A - Extrusion method of BMn40-1.5 manganese copper-nickel alloy tube - Google Patents
Extrusion method of BMn40-1.5 manganese copper-nickel alloy tube Download PDFInfo
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- CN105013855A CN105013855A CN201510529236.9A CN201510529236A CN105013855A CN 105013855 A CN105013855 A CN 105013855A CN 201510529236 A CN201510529236 A CN 201510529236A CN 105013855 A CN105013855 A CN 105013855A
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Abstract
The invention discloses an extrusion method of a BMn40-1.5 manganese copper-nickel alloy tube. The method comprises steps as follows: step one, preparation of blanks; step two, primary induction heating; step three, glass powder lubrication; step four, chambering; step five, secondary induction heating; step six, secondary glass powder lubrication; step seven, extrusion forming, wherein the blanks subjected to glass powder lubrication enters an extruder for extrusion forming. By means of the extrusion method of the BMn40-1.5 manganese copper-nickel alloy tube, severe oxidation in the heating process is effectively avoided, adverse factors hindering deformation of the material are avoided, forming of heat cracks in the material forming process is reduced, and the surface quality of a prepared seamless tube is improved. The performance and the size of the seamless BMn40-1.5 manganese copper-nickel alloy tube produced with the method can meet the requirements of a user.
Description
Technical field
The present invention relates to a kind of pressing method of manganese-copper, specifically a kind of pressing method of BMn40-1.5 manganese-copper pipe.
Background technology
BMn40-1.5 manganese-copper is electrician's corronil, be commonly referred to constantan, there is the high resistivity and high thermo-electromotive force that change with temperature hardly, heat resistance and corrosion stability good, and have high mechanical property, be applicable to the variable resistor and the strain resistance element that make AC meter.Also there is lower temperature-coefficient of electrical resistance, wider serviceability temperature scope (less than 480 DEG C), good machining property, the feature of corrosion-resistant and easy soldering.The resistance in instrument and meter, electronics and industrial equipment and element can be made, be suitable for using in alternating current circuit, make precision resistance, swept resistance, strain ga(u)ge etc., also can be used for thermocouple and compensation lead of thermocouple material.
But in the seamless pipe preparation process of reality, because heated oxide is serious, and resistance of deformation is comparatively large, cause the seamless pipe preparation comparatively difficulty of this material, lumber recovery is low.
Summary of the invention
The object of the present invention is to provide a kind of pressing method of BMn40-1.5 manganese-copper pipe, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A pressing method for BMn40-1.5 manganese-copper pipe, step is as follows:
The first step, blank prepare, and wherein, pipe is as follows according to the component of percentage by weight: nickel and cobalt Co:39.0 ~ 41.0%, manganese Mn:1.0 ~ 2.0%, plumbous Pb :≤0.005%, phosphorus P :≤0.005%, silicon Si :≤0.10%, antimony Sb :≤0.002%, sulphur S :≤0.02%, arsenic As :≤0.010%, carbon C :≤0.10%, bismuth Bi :≤0.002%, magnesium Mg :≤0.05%, surplus is copper Cu;
Second step, an eddy-current heating, ready blank is sent into induction heater and heats, the target temperature of an eddy-current heating is 1020-1100 DEG C, and the heat time controls at 5-15min;
3rd step, glass dust lubricate, and after blank heating to target temperature, blank are delivered to powder platform, carry out glass dust lubrication to blank outer surface, then blank is vertically put into reaming cylinder, and vertically add glass dust and carry out endoporus lubrication;
4th step, reaming, the blank after glass dust lubrication, uses reaming head to complete reaming, releases staving press after blank reaming;
5th step, secondary eddy-current heating, the blank after reaming is sent into secondary induction furnace and is again carried out eddy-current heating, and target temperature range is 1050-1130 DEG C, and the heat time controls at 3-6min;
6th step, again glass dust are lubricated, and blank, after secondary eddy-current heating to target temperature, at blank through rotating roller, carries out interior glassing lubrication by powder spoon, then blank is delivered to powder platform roller coating glass dust, complete outer surface lubrication;
7th step, extruded, the blank through glass dust lubrication enters extruder, carries out extruded.
As the further scheme of the present invention: in the first step, pipe external diameter: Φ 174-415mm, endoporus: Φ 30-80mm, length: 450-1200mm.
As the present invention's further scheme: in the 7th step, extrusion speed controls at 50-150mm/s.
A pressing method for BMn40-1.5 manganese-copper pipe, step is as follows:
The first step, blank prepare, and wherein, pipe is as follows according to the component of percentage by weight: nickel and cobalt Co:39.0 ~ 41.0%, manganese Mn:1.0 ~ 2.0%, plumbous Pb :≤0.005%, phosphorus P :≤0.005%, silicon Si :≤0.10%, antimony Sb :≤0.002%, sulphur S :≤0.02%, arsenic As :≤0.010%, carbon C :≤0.10%, bismuth Bi :≤0.002%, magnesium Mg :≤0.05%, surplus is copper Cu, pipe external diameter: Φ 178-426mm, endoporus: Φ 60-250mm, length: 450-1300mm;
Second step, eddy-current heating, directly send ready blank into induction furnace and carry out eddy-current heating, and the target temperature range of eddy-current heating is 1050-1130 DEG C, and the heat time controls at 5-15min;
3rd step, glass dust lubricate, and blank, after eddy-current heating to target temperature, at blank through rotating roller, carries out interior glassing lubrication by powder spoon, then blank is delivered to powder platform roller coating glass dust, complete outer surface lubrication;
4th step, extruded, the blank through glass dust lubrication enters extruder, and carry out extruded, extrusion speed controls at 50-150mm/s.
As the further scheme of the present invention: in the first step, pipe external diameter: Φ 178-426mm, endoporus: Φ 60-250mm, length: 450-1300mm.
As the present invention's further scheme: in the 4th step, extrusion speed controls at 50-150mm/s.
Compared with prior art, the invention has the beneficial effects as follows: the pressing method of BMn40-1.5 manganese-copper pipe provided by the invention, effectively prevent the severe oxidation in heating process, avoid the on-deformable unfavorable factor of this material, decrease the generation of the hot tearing in this material forming process, improve surface quality prepared by seamless pipe.Reduce frictional force simultaneously, also reduce extruding force, avoid the phenomenons such as vexed car, improve extruded qualification rate, improve lumber recovery, the BMn40-1.5 manganese-copper seamless pipe performance adopting the method to produce and size meet user's requirement.
Detailed description of the invention
Be described in more detail below in conjunction with the technical scheme of detailed description of the invention to this patent.
Embodiment 1
A pressing method for BMn40-1.5 manganese-copper pipe, step is as follows:
The first step, blank prepare, and wherein, pipe is as follows according to the component of percentage by weight: nickel and cobalt Co:39.0 ~ 41.0%, manganese Mn:1.0 ~ 2.0%, plumbous Pb :≤0.005%, phosphorus P :≤0.005%, silicon Si :≤0.10%, antimony Sb :≤0.002%, sulphur S :≤0.02%, arsenic As :≤0.010%, carbon C :≤0.10%, bismuth Bi :≤0.002%, magnesium Mg :≤0.05%, surplus is copper Cu, pipe external diameter: Φ 242mm, endoporus: Φ 45mm, length: 600mm;
Second step, an eddy-current heating, ready blank is sent into induction heater and heats, the target temperature of an eddy-current heating is 1080 DEG C, and the heat time is 8min, and tapping temperature is 1071 DEG C;
3rd step, glass dust lubricate, and after blank heating to target temperature, blank are delivered to powder platform, carry out glass dust lubrication to blank outer surface, then blank is vertically put into reaming cylinder, and vertically add glass dust and carry out endoporus lubrication;
4th step, reaming, the blank after glass dust lubrication, use Φ 102 reaming head to complete reaming, end face shrinkage factor is 20%, releases staving press after blank reaming;
5th step, secondary eddy-current heating, the blank after reaming is sent into secondary induction furnace and is again carried out eddy-current heating, and target temperature is 1100 DEG C, and the heat time is 2min, and tapping temperature is 1110 DEG C;
6th step, again glass dust are lubricated, and blank, after secondary eddy-current heating to target temperature, at blank through rotating roller, carries out interior glassing lubrication by powder spoon, then blank is delivered to powder platform roller coating glass dust, complete outer surface lubrication;
7th step, extruded, the blank through glass dust lubrication enters extruder, and carry out extruded, extrusion speed is 95mm/s, extrusion ratio 13.9, the not super equipment limit extrusion force of extruding force.
Embodiment 2
A pressing method for BMn40-1.5 manganese-copper pipe, step is as follows:
The first step, blank prepare, and wherein, pipe is as follows according to the component of percentage by weight: nickel and cobalt Co:39.0 ~ 41.0%, manganese Mn:1.0 ~ 2.0%, plumbous Pb :≤0.005%, phosphorus P :≤0.005%, silicon Si :≤0.10%, antimony Sb :≤0.002%, sulphur S :≤0.02%, arsenic As :≤0.010%, carbon C :≤0.10%, bismuth Bi :≤0.002%, magnesium Mg :≤0.05%, surplus is copper Cu, pipe external diameter: Φ 178mm, endoporus: Φ 75mm, length: 500mm;
Second step, eddy-current heating, directly send ready blank into induction furnace and carry out eddy-current heating, and the target temperature of eddy-current heating is 1110 DEG C, and the heat time is 5min, and tapping temperature is 1115 DEG C;
3rd step, glass dust lubricate, and blank, after eddy-current heating to target temperature, at blank through rotating roller, carries out interior glassing lubrication by powder spoon, then blank is delivered to powder platform roller coating glass dust, complete outer surface lubrication;
4th step, extruded, the blank through glass dust lubrication enters extruder, and carry out extruded, extrusion speed is 85mm/s, extrusion ratio 19, the not super equipment limit extrusion force of extruding force.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (7)
1. a pressing method for BMn40-1.5 manganese-copper pipe, is characterized in that, step is as follows:
The first step, blank prepare;
Second step, an eddy-current heating, ready blank is sent into induction heater and heats, the target temperature of an eddy-current heating is 1020-1100 DEG C, and the heat time controls at 5-15min;
3rd step, glass dust lubricate, and after blank heating to target temperature, blank are delivered to powder platform, carry out glass dust lubrication to blank outer surface, then blank is vertically put into reaming cylinder, and vertically add glass dust and carry out endoporus lubrication;
4th step, reaming, the blank after glass dust lubrication, uses reaming head to complete reaming, releases staving press after blank reaming;
5th step, secondary eddy-current heating, the blank after reaming is sent into secondary induction furnace and is again carried out eddy-current heating, and target temperature range is 1050-1130 DEG C, and the heat time controls at 3-6min;
6th step, again glass dust are lubricated, and blank, after secondary eddy-current heating to target temperature, at blank through rotating roller, carries out interior glassing lubrication by powder spoon, then blank is delivered to powder platform roller coating glass dust, complete outer surface lubrication;
7th step, extruded, the blank through glass dust lubrication enters extruder, carries out extruded.
2. the pressing method of BMn40-1.5 manganese-copper pipe according to claim 1, is characterized in that, in the first step, and pipe external diameter: Φ 174-415mm, endoporus: Φ 30-80mm, length: 450-1200mm.
3. the pressing method of BMn40-1.5 manganese-copper pipe according to claim 1, is characterized in that, in the 7th step, extrusion speed controls at 50-150mm/s.
4. a pressing method for BMn40-1.5 manganese-copper pipe, is characterized in that, step is as follows:
The first step, blank prepare;
Second step, eddy-current heating, directly send ready blank into induction furnace and carry out eddy-current heating, and the target temperature range of eddy-current heating is 1050-1130 DEG C, and the heat time controls at 5-15min;
3rd step, glass dust lubricate, and blank, after eddy-current heating to target temperature, at blank through rotating roller, carries out interior glassing lubrication by powder spoon, then blank is delivered to powder platform roller coating glass dust, complete outer surface lubrication;
4th step, extruded, the blank through glass dust lubrication enters extruder, carries out extruded.
5. the pressing method of BMn40-1.5 manganese-copper pipe according to claim 4, is characterized in that, in the first step, and pipe external diameter: Φ 178-426mm, endoporus: Φ 60-250mm, length: 450-1300mm.
6. the pressing method of BMn40-1.5 manganese-copper pipe according to claim 4, is characterized in that, in the 4th step, extrusion speed controls at 50-150mm/s.
7. the pressing method of the BMn40-1.5 manganese-copper pipe according to claim 1 or 4, is characterized in that, in the first step, pipe is as follows according to the component of percentage by weight: nickel and cobalt Co:39.0 ~ 41.0%, manganese Mn:1.0 ~ 2.0%, plumbous Pb :≤0.005%, phosphorus P :≤0.005%, silicon Si :≤0.10%, antimony Sb :≤0.002%, sulphur S :≤0.02%, arsenic As :≤0.010%, carbon C :≤0.10%, bismuth Bi :≤0.002%, magnesium Mg :≤0.05%, surplus is copper Cu.
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| CN201510529236.9A CN105013855A (en) | 2015-08-26 | 2015-08-26 | Extrusion method of BMn40-1.5 manganese copper-nickel alloy tube |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945080A (en) * | 2016-06-28 | 2016-09-21 | 邯郸新兴特种管材有限公司 | Extrusion method for alloy pipe hard to deform |
| CN108087996A (en) * | 2017-11-24 | 2018-05-29 | 重庆赛格尔汽车配件有限公司 | A kind of idle call resistance to deformation copper pipe and extrusion process |
| CN111940528A (en) * | 2019-05-17 | 2020-11-17 | 宝武特种冶金有限公司 | Blank length parameter correction method for seamless steel pipe high-temperature through reaming processing |
| CN115464056A (en) * | 2022-07-28 | 2022-12-13 | 邯郸新兴特种管材有限公司 | Hole enlarging method for producing large-diameter thin-walled tube by extrusion mode |
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| US3514986A (en) * | 1966-06-02 | 1970-06-02 | Schloemann Ag | Cooling means for extruded material |
| JPH11156428A (en) * | 1997-11-25 | 1999-06-15 | Fujikura Ltd | Extruding device for copper or copper alloy |
| CN1710127A (en) * | 2005-07-04 | 2005-12-21 | 洛阳铜加工集团有限责任公司 | Method for preparing high-strength wear-resistant brass pipe |
| CN103447760A (en) * | 2013-08-12 | 2013-12-18 | 新兴铸管股份有限公司 | Manufacturing method of N08028 seamless alloy steel pipe |
| CN103740977A (en) * | 2014-01-16 | 2014-04-23 | 九星控股集团有限公司 | Corrosion-resistant white copper tube and manufacturing method thereof |
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2015
- 2015-08-26 CN CN201510529236.9A patent/CN105013855A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3514986A (en) * | 1966-06-02 | 1970-06-02 | Schloemann Ag | Cooling means for extruded material |
| JPH11156428A (en) * | 1997-11-25 | 1999-06-15 | Fujikura Ltd | Extruding device for copper or copper alloy |
| CN1710127A (en) * | 2005-07-04 | 2005-12-21 | 洛阳铜加工集团有限责任公司 | Method for preparing high-strength wear-resistant brass pipe |
| CN103447760A (en) * | 2013-08-12 | 2013-12-18 | 新兴铸管股份有限公司 | Manufacturing method of N08028 seamless alloy steel pipe |
| CN103740977A (en) * | 2014-01-16 | 2014-04-23 | 九星控股集团有限公司 | Corrosion-resistant white copper tube and manufacturing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945080A (en) * | 2016-06-28 | 2016-09-21 | 邯郸新兴特种管材有限公司 | Extrusion method for alloy pipe hard to deform |
| CN108087996A (en) * | 2017-11-24 | 2018-05-29 | 重庆赛格尔汽车配件有限公司 | A kind of idle call resistance to deformation copper pipe and extrusion process |
| CN111940528A (en) * | 2019-05-17 | 2020-11-17 | 宝武特种冶金有限公司 | Blank length parameter correction method for seamless steel pipe high-temperature through reaming processing |
| CN115464056A (en) * | 2022-07-28 | 2022-12-13 | 邯郸新兴特种管材有限公司 | Hole enlarging method for producing large-diameter thin-walled tube by extrusion mode |
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