CN1085486A - Rotary grain-cutter and manufacture method thereof - Google Patents
Rotary grain-cutter and manufacture method thereof Download PDFInfo
- Publication number
- CN1085486A CN1085486A CN 92111044 CN92111044A CN1085486A CN 1085486 A CN1085486 A CN 1085486A CN 92111044 CN92111044 CN 92111044 CN 92111044 A CN92111044 A CN 92111044A CN 1085486 A CN1085486 A CN 1085486A
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- cutter
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The present invention relates to rotary grain-cutter tool and manufacture method thereof that a kind of polyester pelletizing is used.Rotary grain-cutter provided by the invention, blade are Co-Cr-W hard alloy overlay welding sword, and its hardness is Rc42-45, and cutter tooth is wear-resisting, and is corrosion-resistant, shock-resistant, and thermohardening is good, and the pelletizing amount can reach 3000 tons/sharpening 1 time.This grain-cutter is easy to make and maintenance, has high economic benefit.
Description
The present invention relates to rotary grain-cutter tool and manufacture method thereof that a kind of polyester pelletizing is used.
Be used at present the rotary grain-cutter tool whole manufacturing of usefulness steel alloy mostly that the polyester pelletizing is used both at home and abroad.It is earlier with Cr12MV alloy tool forging cutter blank (Cylinder), annealed processing, rough turn then inside and outside garden, and cutter blank garden cylinder milled out profile of tooth, tooth portion with cutter carries out Quenching Treatment again, the two ends endoporus of cutter installs central shaft after being milled to and requiring size, and edged surface and outer garden tread are to requiring size before and after the last tooth lapping.The rotary grain-cutter that the method is made must carry out Quenching Treatment before using, and the Quenching Treatment technical difficulty is big, and after the quenching, blade hardness is wayward, weares and teares easily and tipping, thereby has increased the reconditioning number of times, has shortened life cycle and life-span.In addition, not corrosion-resistant with alloy tool steel grain-cutter made in one piece, get rusty easily during underwater cutpellet, can influence the polyester slice quality.
The objective of the invention is to design a kind of on mother metal the cutter of pile-up welding hard alloy blade, to improve thermohardening, wearability and the toughness of cutter blade.
Rotary grain-cutter provided by the invention is a garden column cutter base, even distribution cutter tooth on the cylinder of the garden of cutter base, and cutter tooth is the spiral trend, and cutter tooth becomes 2-3 degree angle with the cutter hub central axis, and the cutter tooth blade is a Co-Cr-W hard alloy overlay welding sword.
The cutter blank mother metal that the present invention adopts is the stainless steel Cylinder, cutter blank is after rough turn, mill out the cutter hub profile of tooth base portion angle-shaped groove of some equally distributed 50-65 degree (or on the side face of cutter blank garden, leave) on request at the garden of cutter blank side face, then under 300-350 ℃, become knife-edge at profile of tooth base portion (or in angle-shaped groove) built-up welding Co-Cr-W carbide alloy, the edged surface and the back of tooth are to requiring size (in angle-shaped groove during the built-up welding blade before and after the last tooth lapping blade, must mill out the cutter hub profile of tooth earlier after the built-up welding, grind the cutter tooth blade front and back edged surface and the back of tooth again).
Rotary grain-cutter provided by the invention, cutter tooth blade hardness is Rc42-45, and cutter tooth is wear-resisting, and is corrosion-resistant, shock-resistant, and thermohardening is good; Hardness is still greater than 39(Rc when temperature is 500 ℃), the cutter life cycle is long, pelletizing amount＞3000 ton/sharpening 1 time.And cutter made in one piece, the pelletizing amount has only 500-800 ton/sharpening once.
Rotary grain-cutter manufacture method of the present invention further describes by drawings and Examples.
Accompanying drawing 1, be the grain-cutter front view
Accompanying drawing 2, be the grain-cutter side view
Accompanying drawing 3, be A-A normal direction cutaway view (chamfered groove built-up welding)
Accompanying drawing 4, be A-A normal direction cutaway view (built-up welding of tooth base)
1, axle; 2, cutter hub; 3, cutter tooth; 3-1, cutter tooth base portion; 3-2, cutter tooth built-up welding blade; 4, angle-shaped groove.
Embodiment 1:
The stainless steel cutter blank is rough turn to diameter 162.5mm, and long 680mm Cylinder is made screw at cutter hub (2) two ends, installs to mill and uses mandrel, mills out profile of tooth base portion (3-1) then, and the cutter tooth trend is spiral, and cutter tooth and cutter hub central axis angle are 2 degree.Dismounting is milled and is used mandrel, and the built-up welding two-semiaxle of packing into, in the placement heating furnace, heat to 300-350 ℃ of laggard windrow weldering increment blade (3-2), resurfacing welding material is the Co-Cr-W carbide alloy, after built-up welding is intact heating furnace is cooled to 200 ℃ of constant temperature 2 hours, continues to reduce to room temperature again, grind the increment front and back edged surface and the back of tooth then to requiring size, the cutter tooth blade hardness after processing is Rc45.
Embodiment 2:
The stainless steel cutter blank is rough turn, make its diameter 164mm, cutter hub length 690mm, and install to mill at cutter hub (2) two ends and use mandrel, on the side face of cutter hub garden, mill out 55 degree angle-shaped grooves (4), remove then to mill and use mandrel, the built-up welding two-semiaxle is installed, cutter hub is inserted be warming up to 300-350 ℃ in the heating furnace, built-up welding Co-Cr-W carbide alloy blade (3-2) in the cutter hub angle-shaped groove, be cooled to 200 ℃ of constant temperature 2 hours after built-up welding is intact, continue to reduce to room temperature again, finish turning cutter hub two ends endoporus and end face are to precision prescribed then, size is installed the cutter hub two-semiaxle, mill out profile of tooth, grind the cutter tooth front and back edged surface and the back of tooth at last to requiring size.Cutter tooth blade hardness after processing is Rc43.
Claims (2)
1, a kind of rotary grain-cutter comprises parts such as garden column cutter base and cutter tooth, and the blade that it is characterized in that cutter tooth is a Co-Cr-W hard alloy overlay welding sword, and cutter tooth becomes 2-3 degree angle with the central axis of cutter hub.
2, a kind of manufacture method of rotary grain-cutter, it is characterized in that earlier milling out the cutter hub profile of tooth base portion angle-shaped groove of 50-65 degree (or on the cylinder of garden, leave) on the face of cylinder of stainless steel cutter blank, become knife-edge at profile of tooth base portion (or in angle-shaped groove) built-up welding Co-Cr-W carbide alloy then, grind before and after the blade edged surface and the back of tooth at last to requiring size (in angle-shaped groove during the built-up welding blade, must mill out profile of tooth earlier after the built-up welding, grind the blade front and back edged surface and the back of tooth again).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111044 CN1085486A (en) | 1992-10-13 | 1992-10-13 | Rotary grain-cutter and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111044 CN1085486A (en) | 1992-10-13 | 1992-10-13 | Rotary grain-cutter and manufacture method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1085486A true CN1085486A (en) | 1994-04-20 |
Family
ID=4945129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92111044 Pending CN1085486A (en) | 1992-10-13 | 1992-10-13 | Rotary grain-cutter and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1085486A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387408C (en) * | 2006-08-21 | 2008-05-14 | 苏州利德纺织机件有限公司 | Granules cut moving knife and method for manufacturing the same |
| CN102848412A (en) * | 2011-05-24 | 2013-01-02 | 好使有限责任公司和两合公司 | Blade and cutting device and cutting method |
| CN110270712A (en) * | 2019-07-02 | 2019-09-24 | 马鞍山市旭隆冶金机械有限公司 | A kind of Bar Wire Product built-up welding cutting edge |
-
1992
- 1992-10-13 CN CN 92111044 patent/CN1085486A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387408C (en) * | 2006-08-21 | 2008-05-14 | 苏州利德纺织机件有限公司 | Granules cut moving knife and method for manufacturing the same |
| CN102848412A (en) * | 2011-05-24 | 2013-01-02 | 好使有限责任公司和两合公司 | Blade and cutting device and cutting method |
| CN102848412B (en) * | 2011-05-24 | 2016-05-04 | 好使有限责任公司和两合公司 | Cutter and cutter sweep and cutting method |
| CN110270712A (en) * | 2019-07-02 | 2019-09-24 | 马鞍山市旭隆冶金机械有限公司 | A kind of Bar Wire Product built-up welding cutting edge |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |