CN111203548A - Machining method for applying ceramic blade to manganese-chromium series non-magnetic large part - Google Patents
Machining method for applying ceramic blade to manganese-chromium series non-magnetic large part Download PDFInfo
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- CN111203548A CN111203548A CN202010050702.6A CN202010050702A CN111203548A CN 111203548 A CN111203548 A CN 111203548A CN 202010050702 A CN202010050702 A CN 202010050702A CN 111203548 A CN111203548 A CN 111203548A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2226/00—Materials of tools or workpieces not comprising a metal
- B23B2226/18—Ceramic
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
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Abstract
The invention discloses a processing method of a ceramic blade applied to manganese-chromium series non-magnetic large parts, which comprises the following steps: (1) selecting a cutter; (2) selecting a workpiece material; (3) selecting a cutting speed; (4) and selecting the feed amount. The invention combines the equipment condition, selects a proper blade, summarizes the processing method of the high-manganese high-chromium nonmagnetic large part by setting parameters such as a cutter, a workpiece material, a cutting speed, a feed amount and the like and accumulating experiences, can simultaneously realize the rough turning and the finish turning of the workpiece, greatly improves the working efficiency, reduces the cutter loss, has good effect, and meets the requirements on the workpiece performance and the processing precision.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the field of part processing, and particularly relates to a processing method of a ceramic blade applied to a manganese-chromium series non-magnetic large part.
[ background of the invention ]
The manganese-chromium series non-magnetic material has very low heat conductivity coefficient and low magnetic conductivity. When the magnetic field intensity is 16000a/m (200 oersted), the magnetic permeability of the non-magnetic steel is less than or equal to 1.319 multiplied by 10-6h/m (1.05 Gao) and the magnetic permeability of the stainless steel is 1.339 multiplied by 10-6h/m (1.1 Gao). Austenitic stainless steels are lightly magnetic after cold working. The high-strength wear-resistant steel plate has high hardness and strength and good wear resistance, is generally used for large structural parts which do not generate magnetic induction in a strong magnetic field, can effectively improve the performance of equipment and reduce the manufacturing cost. Such as stator pressing rings of large and medium-sized generators, non-magnetic parts of steam turbines and the like. Such as a large stator pressing ring made of high-manganese high-chromium nonmagnetic steel ZG25Mn18Cr 4. The high-manganese high-chromium non-magnetic steel has higher hardness, strength and wear resistance, and has important characteristics of work hardening performance and difficult cutting processing. The conventional process is to use YW universal hard alloy to process on a large vertical lathe, because the diameter of a workpiece is larger, the YW universal hard alloy can only realize 3-4 revolutions per minute during processing, the depth of cut cannot exceed 5mm, and because of the action of work hardening, the cutting edge of a blade is easy to wear or peel off, the processing efficiency and the processing precision are lower, the requirements of the performance and the processing precision of a non-magnetic steel large stator pressing ring cannot be met, and the small-batch production can be realized.
[ summary of the invention ]
The invention provides a processing method of a ceramic blade applied to a manganese-chromium series non-magnetic large part, which aims to solve the problems of low working efficiency, large cutter loss and the like of the traditional processing method.
In order to solve the technical problems, the invention adopts the following technical scheme:
a processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter;
(2) selecting a workpiece material;
(3) selecting a cutting speed;
(4) and selecting the feed amount.
Further, the cutter in the step (1) is a CBN cutter.
Further, the blade of the CBN cutter is a CBN cubic boron carbide ceramic blade.
Further, the cutting speed in the step (3) comprises rough turning and finish turning cutting speeds.
Further, the rough turning cutting speed is 8-12 r/min.
Further, the finish turning cutting speed is 16-25 r/min.
Further, the feed amount in the step (4) comprises rough turning and finish turning feed amounts.
Further, the rough turning feed amount is 6-10 mm.
Further, the finish turning feed amount is 0.6-1 mm.
The invention has the following beneficial effects:
(1) the invention combines the equipment condition, selects a proper blade, summarizes the processing method of the high-manganese high-chromium nonmagnetic large part by setting parameters such as a cutter, a workpiece material, a cutting speed, a feed amount and the like and accumulating experiences, can simultaneously realize the rough turning and the finish turning of the workpiece, greatly improves the working efficiency, reduces the cutter loss, has good effect, and meets the requirements on the workpiece performance and the processing precision.
(2) The invention combines the original equipment conditions, and is safe and simple.
(3) The working efficiency of the invention is improved by more than 2-3 times compared with the prior art, and because the red hardness of the CBN blade is good, compared with the YW blade, the cutter loss is reduced by more than 3-5 times according to the existing processing method; in the past, YW blades are used for processing, 5-10 blades are used for each shift, and a normal CBN blade can be processed for 3-5 shifts, so that the purposes of efficiency improvement, energy conservation and reduction are well achieved, and batch production can be realized.
(4) The invention can be widely popularized to various workpieces for use and has great social and economic benefits.
[ detailed description ] embodiments
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
In an embodiment, the processing method of applying the ceramic blade to the manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 8-12 r/min, and the finish turning cutting speed is 16-25 r/min;
(4) and selecting the feed amount, wherein the feed amount comprises rough turning feed amount and finish turning feed amount, the rough turning feed amount is 6-10mm, and the finish turning feed amount is 0.6-1 mm.
The present invention is illustrated by the following more specific examples.
Example 1
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 8 revolutions per minute, and the finish turning cutting speed is 16 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 7mm, and the finish turning feed amount is 0.6 mm.
Example 2
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 12 revolutions per minute, and the finish turning cutting speed is 24 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises rough turning and finish turning feed amounts, the rough turning feed amount is 6mm, and the finish turning feed amount is 0.7 mm.
Example 3
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 9 revolutions per minute, and the finish turning cutting speed is 25 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 10mm, and the finish turning feed amount is 1 mm.
Example 4
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 10 revolutions per minute, and the finish turning cutting speed is 16 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 8mm, and the finish turning feed amount is 0.7 mm.
Example 5
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting a cutting speed, wherein the cutting speed comprises a rough turning cutting speed and a finish turning cutting speed, the rough turning cutting speed is 12 revolutions per minute, and the finish turning cutting speed is 17 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 9mm, and the finish turning feed amount is 0.6 mm.
Example 6
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 12 revolutions per minute, and the finish turning cutting speed is 25 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 10mm, and the finish turning feed amount is 1 mm.
Example 7
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 11 revolutions per minute, and the finish turning cutting speed is 18 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 9mm, and the finish turning feed amount is 0.8 mm.
Example 8
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 12 revolutions per minute, and the finish turning cutting speed is 20 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 8mm, and the finish turning feed amount is 0.8 mm.
Example 9
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 12 revolutions per minute, and the finish turning cutting speed is 23 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 7mm, and the finish turning feed amount is 0.9 mm.
Example 10
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 9 revolutions per minute, and the finish turning cutting speed is 19 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises rough turning and finish turning feed amounts, the rough turning feed amount is 6mm, and the finish turning feed amount is 0.8 mm.
Example 11
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 11 revolutions per minute, and the finish turning cutting speed is 22 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 8mm, and the finish turning feed amount is 0.8 mm.
Example 12
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 12 revolutions per minute, and the finish turning cutting speed is 24 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 7mm, and the finish turning feed amount is 0.8 mm.
Example 13
A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part comprises the following steps:
(1) selecting a cutter, wherein the cutter is a CBN cutter, and a blade of the CBN cutter is a CBN cubic boron carbide ceramic blade;
(2) selecting a workpiece material;
(3) selecting cutting speed, wherein the cutting speed comprises rough turning cutting speed and finish turning cutting speed, the rough turning cutting speed is 9 revolutions per minute, and the finish turning cutting speed is 23 revolutions per minute;
(4) and selecting a feed amount, wherein the feed amount comprises a rough turning feed amount and a finish turning feed amount, the rough turning feed amount is 7mm, and the finish turning feed amount is 0.9 mm.
The technical principle of the invention is as follows:
(1) a CBN cubic boron carbide ceramic blade with good red hardness is selected to replace a YW universal hard alloy blade, and the YW universal hard alloy is used for processing a high-manganese non-magnetic steel ZG25Mn18Cr4 large-scale stator pressing ring on a heavy vertical lathe. The YW hard alloy is micron level powder of high hardness refractory metal compound (mainly WC, TiC, etc., also called high temperature carbide), and sintered with Co, Mo, Ni, etc. as adhesive to form powder metallurgy product, and under certain cutting technological condition, the allowable cutting temperature can reach 800-1000 deg.c, and its bending strength is greater than or equal to 1180N/m2The hardness is more than or equal to 91.5, and the processing of materials which are difficult to process, such as heat-resistant steel, high manganese steel, stainless steel and the like, is traditionally used. The CBN cutter has high hardness which exceeds the room temperature hardness of the best hard alloy cutter blade and reaches HV1800-4800, and a plurality of hard points such as high hardness oxide, nitride, boride and the like with fine particles are uniformly distributed in the machine body, so that the CBN cutter blade can cut hardened steel with the hardness of HRC75, has particularly good heat resistance and high-temperature oxidation resistance, and can still maintain certain hardness and strength for long-time cutting even at the high temperature of 1450 ℃ of 1200-. Therefore, the cutting speed of the tool is allowed to be much higher than that of a hard alloy tool, high-speed cutting is realized, the cutting speed of the tool is generally 3-10 times higher than that of the hard alloy tool, and the production efficiency of materials difficult to machine can be greatly improved.
(2) When the lathe is rough, the lathe is a heavy double-column vertical lathe, so that the rigidity of the lathe is high, and the machining vibration is reduced. In the past, YW blades are used for processing, the cutting depth can only be 3-5mm, and the rotating speed can not exceed 5-8 r/min. The CBN blade is selected to practice to prove that the cutting depth is selected to be 6-10mm according to the processing technological parameters of the cutter, the rotating speed is selected to be within the range of 8-12 r/min according to the size of a workpiece, and the efficiency and the economical efficiency of the blade can be better considered during rough processing. Because the manganese-chromium nonmagnetic material has the characteristic of work hardening during processing, in order to improve the efficiency, the rough processing adopts large cutting depth and low rotating speed as much as possible, the metal surface which can be removed is removed as much as possible during the first processing of the cutter, and the cutting life of the cutter is considered, so that the good characteristic of the CBN cutter processing is better exerted.
(3) And when the machine tool is used for fine machining, the machine tool is used for rough machining. The cutting depth of the processing technique parameters is selected to be 0.6-1mm, the rotating speed is selected to be 16-25 rpm, the processing efficiency is obviously improved compared with that of a YW blade, and the blade is more durable. In the past, when a YW blade is used for fine processing, the cutting depth is 0.2-0.5mm, and the rotating speed cannot exceed 8-12 r/m; by adopting the CBN blade, the high-speed cutting can be realized due to the good red hardness of the CBN blade, and the good processing precision can be still kept when the processing surface is long.
(4) The selected blade can continuously finish rough turning and finish turning of the workpiece, and the machining precision meets the requirement. The CBN blade not only has high hardness, but also has better bending strength, and the compression strength of the CBN blade is higher than that of high-speed steel and is equivalent to that of common hard alloy when the CBN blade is changed within the range of 800-900MPa according to different ranks. YW blade processing, when the length of a processed surface exceeds more than 150MM, the conventional rotating speed processing blade causes obvious wavy lines on the processed surface due to abrasion, the surface roughness hardly reaches the requirement of more than 6.3, and the processed surface needs to be polished and leveled manually after the processing is finished. And (3) machining the CBN blade, wherein one tool nose can realize simultaneous machining of rough machining, semi-finish machining and finish machining, and the machining of large manganese-chromium nonmagnetic casting products can be well realized according to the setting and selection of the rough machining and finish machining process parameters in the steps (2) and (3), so that the efficiency is greatly improved, and the precision of the finish machining surface can stably reach the roughness of more than 6.3.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A processing method for applying a ceramic blade to a manganese-chromium series non-magnetic large part is characterized by comprising the following steps:
(1) selecting a cutter;
(2) selecting a workpiece material;
(3) selecting a cutting speed;
(4) and selecting the feed amount.
2. The method for machining the manganese-chromium-series nonmagnetic large part by using the ceramic blade according to claim 1, wherein the tool in the step (1) is a CBN tool.
3. The machining method for applying the ceramic blade to the manganese-chromium-series nonmagnetic large-sized part according to claim 2, wherein the blade of the CBN cutter is a CBN cubic boron carbide ceramic blade.
4. The method for machining the large manganese-chromium-based nonmagnetic part by using the ceramic blade as claimed in claim 1, wherein the cutting speed in the step (3) comprises rough turning and finish turning cutting speeds.
5. The method for machining the large manganese-chromium-series nonmagnetic part by using the ceramic blade according to claim 4, wherein the rough turning cutting speed is 8-12 rpm.
6. The method for machining the large manganese-chromium-series nonmagnetic part by using the ceramic blade according to claim 4, wherein the finish turning cutting speed is 16-25 rpm.
7. The method for machining the ceramic blade applied to the manganese-chromium-series large nonmagnetic part according to the claim 1, wherein the feed amount in the step (4) comprises rough turning and finish turning feed amounts.
8. The machining method for applying the ceramic blade to the manganese-chromium-series large nonmagnetic part according to claim 7 is characterized in that the rough turning feed amount is 6-10 mm.
9. The machining method for applying the ceramic blade to the manganese-chromium-series large nonmagnetic part according to claim 7 is characterized in that the finish turning feed amount is 0.6-1 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010050702.6A CN111203548A (en) | 2020-01-17 | 2020-01-17 | Machining method for applying ceramic blade to manganese-chromium series non-magnetic large part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010050702.6A CN111203548A (en) | 2020-01-17 | 2020-01-17 | Machining method for applying ceramic blade to manganese-chromium series non-magnetic large part |
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Citations (4)
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|---|---|---|---|---|
| CN101450862A (en) * | 2007-03-12 | 2009-06-10 | 山特维克知识产权股份有限公司 | Ceramic cutting insert |
| CN101503783A (en) * | 2009-03-16 | 2009-08-12 | 天津大学 | High nitrogen die steel for single crystal diamond turning and manufacturing method hereof |
| CN103056393A (en) * | 2012-11-07 | 2013-04-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Machining method through ceramic blades |
| JP5561601B2 (en) * | 2010-03-25 | 2014-07-30 | 日立金属株式会社 | Steel cutting method |
-
2020
- 2020-01-17 CN CN202010050702.6A patent/CN111203548A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101450862A (en) * | 2007-03-12 | 2009-06-10 | 山特维克知识产权股份有限公司 | Ceramic cutting insert |
| CN101503783A (en) * | 2009-03-16 | 2009-08-12 | 天津大学 | High nitrogen die steel for single crystal diamond turning and manufacturing method hereof |
| JP5561601B2 (en) * | 2010-03-25 | 2014-07-30 | 日立金属株式会社 | Steel cutting method |
| CN103056393A (en) * | 2012-11-07 | 2013-04-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Machining method through ceramic blades |
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| 王雁彬: "《机械加工技师手册》", 30 June 2013 * |
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Application publication date: 20200529 |