CN1410205A - Neodymium iron boron alloy powder deep processing technology - Google Patents
Neodymium iron boron alloy powder deep processing technology Download PDFInfo
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- CN1410205A CN1410205A CN 01142261 CN01142261A CN1410205A CN 1410205 A CN1410205 A CN 1410205A CN 01142261 CN01142261 CN 01142261 CN 01142261 A CN01142261 A CN 01142261A CN 1410205 A CN1410205 A CN 1410205A
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- alloy powder
- iron boron
- neodymium iron
- boron alloy
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Abstract
A technology for deep processing of NdFeB alloy powder in a full-enclosed system and the protection of inertial gas includes such steps as pulverizing to primary and secondary systematic reclaiming and sieving the pulverized powder to obtain the NdFeB alloy particles (more than 500 meshes). Its advantages are high productivity (200 Kg/hr) and no environmental pollution.
Description
One, technical field
The present invention relates to Nd Fe B alloys spherical powder processing technology, is a kind of flouring technology method that can overcome inflammable and explosive and easy oxidation specifically.
Two, background technology
Pulverizing processing to Nd Fe B alloys; under the nominal situation condition, can not realize; because Nd Fe B alloys is very easily oxidation in air; Nd Fe B alloys and metal bump can set off an explosion or burn in crushing process, and domestic for this reason present stage few people dare to produce this series products, even produced in small quantities also is in ball mill; carry out attrition process with nitrogen protection; production efficiency is extremely low, per hour can only produce 40～50kg/h, and fineness can only reach below 200 orders.
Three, summary of the invention
The object of the present invention is to provide a kind of passing through to use special high-speed eddy pulverizer and supporting privacy protection recovery system, be used to make the neodymium iron boron alloy powder granularity and can reach 500 orders, the processing technology of specific yield 200kg/h.
Neodymium iron boron alloy powder deep processing technology of the present invention comprises:
Feeder, pulverizer, reclaim line system are all connected one, adopt the closed circulation loop, block oxygen, nitrogen, argon mixture gas are injected in proportion, concentration＞96%, and adopt the liquid nitrogen cooling measure, thus be implemented in not on fire in the high-speed eddy crushing process, do not explode, not oxidation, can continuous 24 hours uninterrupted productions.
Privacy protection recovery system of the present invention, its composition mainly comprises: closed charging system, crushing system, recovery system, secondary recovery system, detected temperatures system, oxygen concentration system, safety anti-explosive system, N
2, Ar
2Gas charging system, joint gate control system and operating numerical control system form, and the nitrogen that uses in the native system, argon mixture gas can fire-retardant, explosion-proof, coolings, can carry out sorting again and reuse, thereby stop environmental pollution and waste of material.
The use of powder process method that is adopted among the present invention and protection recovery system is to produce the Nd Fe B alloys spherical powder and reach the above and production efficiency of 500 orders to reach the above key of 200kg/h, the visible accompanying drawing of the structure of whole system.
Four, description of drawings
Each part description: 1 numerical control electrical control panel, 2 gas tanks, 3 sealing feeders, No. 4 retracting devices, 5 temperature measurers, 6 oxygen analysers, 7 pressure safety valves, 8 secondary recovery devices, 9 device reclaim line, 10 controlled valves, 11 blower fans, 12 supports, 13 pulverizers.
Five, the specific embodiment
The operation process of whole system is as follows:
The Nd Fe B alloys sheet is packed into from the feed system inlet; lid is tightened; material enters in the eddy mill through the rise in vibration machine; by several blade that rotates at a high speed; blade; the mutual collision of grinding disk and eddy current air-flow; hit; cut off; friction; extruding; form the following high fineness spherical powder of 500 orders at last; through one; the powder of the qualified order number of secondary pneumatic separating is recovered; underproof powder will be sent back to main frame again and be processed once more; whole system is in running; the nitrogen that is charged into; the argon gas ratio of gas mixture is 5: 1; concentration reaches more than 96%; the whole service system adopts the computer complete monitoring; temperature is arranged; concentration detection system and pressure security protection system; work as temperature; concentration; when pressure and other parameters surpasses safety standard; monitoring system is sent indication; system begins cooling; step-down; air-makeup system starts; guarantee the whole system safe operation; finish the whole process of neodymium iron boron alloy powder; thereby reach 24 hours uninterrupted productions; production efficiency reaches more than the 200kg/h, reaches the above granularity of 500 orders.
Claims (3)
1, a kind of neodymium iron boron alloy powder deep processing technology; it is characterized in that the Nd Fe B alloys that will be cut into chunky shape adds vibration feeder; pulverize and the screening of first and second seperator by the high-speed eddy pulverizer; can obtain the neodymium iron boron alloy powder of different meshes; whole system adopts the totally-enclosed circulatory system; inert gas shielding, computer complete monitoring and temperature, oxygen, concentration, the protection of pressure security detection system.
2, a kind of neodymium iron boron alloy powder deep processing technology according to claim 1; it is characterized in that manufacturing system by vibration feeder feeding, high-speed eddy pulverizer pulverize, once, second separator and the totally-enclosed circulatory system form; adopt inert gas shielding, computer complete monitoring and temperature, oxygen, concentration, pressure relief system detection and system's control realize the production safety operation and run well.
3; a kind of Nd Fe B alloys flour producing process according to claim 1; it is characterized in that the process of neodymium iron boron alloy powder in whole system is: the Nd Fe B alloys sheet is packed into from the feed system inlet; lid is tightened; material enters in the eddy mill through the rise in vibration machine; by several blade that rotates at a high speed; blade; the mutual collision of grinding disk and eddy current air-flow; hit; cut off; friction; extruding; form the following high fineness spherical powder of 500 orders at last; through one; the powder of the qualified order number of secondary pneumatic separating is recovered; underproof powder will be sent back to main frame again and be processed once more; whole system is in running; being charged into nitrogen argon gas ratio of gas mixture is 5: 1; concentration reaches more than 96%; whole service system employing machine is calculated the machine complete monitoring; temperature is arranged; concentration detection system and pressure security protection system; work as temperature; concentration; when pressure and other parameters surpasses safety standard; monitoring system is sent indication; begin cooling; step-down; air-makeup system starts the safe operation of assurance whole system; finish the whole process of neodymium iron boron alloy powder; thereby reach 24 hours uninterrupted productions; the production efficiency that 200kg/h is above reaches the above granularity of 500 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01142261 CN1410205A (en) | 2001-09-21 | 2001-09-21 | Neodymium iron boron alloy powder deep processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01142261 CN1410205A (en) | 2001-09-21 | 2001-09-21 | Neodymium iron boron alloy powder deep processing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1410205A true CN1410205A (en) | 2003-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01142261 Pending CN1410205A (en) | 2001-09-21 | 2001-09-21 | Neodymium iron boron alloy powder deep processing technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN1410205A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1725394B (en) * | 2005-06-08 | 2010-04-07 | 浙江大学 | Method for increasing working temp and corrosion resisting property of Nd-Fe-B by adding nona silicon nitride in crystal boundary phase |
| CN104979092A (en) * | 2015-07-13 | 2015-10-14 | 天津海特磁性材料有限公司 | Vacuum crushing manufacturing technique of rapid quenching neodymium iron boron (NdFeB) magnetic powder and use thereof |
| CN105501718A (en) * | 2015-12-01 | 2016-04-20 | 中磁科技股份有限公司 | Fast oxygen exhaust system for powder silo |
| CN112164572A (en) * | 2020-09-01 | 2021-01-01 | 安徽省瀚海新材料股份有限公司 | Compression molding process of neodymium iron boron product |
-
2001
- 2001-09-21 CN CN 01142261 patent/CN1410205A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1725394B (en) * | 2005-06-08 | 2010-04-07 | 浙江大学 | Method for increasing working temp and corrosion resisting property of Nd-Fe-B by adding nona silicon nitride in crystal boundary phase |
| CN104979092A (en) * | 2015-07-13 | 2015-10-14 | 天津海特磁性材料有限公司 | Vacuum crushing manufacturing technique of rapid quenching neodymium iron boron (NdFeB) magnetic powder and use thereof |
| CN105501718A (en) * | 2015-12-01 | 2016-04-20 | 中磁科技股份有限公司 | Fast oxygen exhaust system for powder silo |
| CN112164572A (en) * | 2020-09-01 | 2021-01-01 | 安徽省瀚海新材料股份有限公司 | Compression molding process of neodymium iron boron product |
| CN112164572B (en) * | 2020-09-01 | 2022-07-22 | 安徽省瀚海新材料股份有限公司 | Compression molding process of neodymium iron boron product |
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