CN1043243C

CN1043243C - Self-sharpening beet-shredding blade and its manufacture

Info

Publication number: CN1043243C
Application number: CN 96104127
Authority: CN
Inventors: 马顺明
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-26
Filing date: 1996-03-26
Publication date: 1999-05-05
Anticipated expiration: 2016-03-26
Also published as: CN1160767A

Abstract

The present invention relates to a self-sharpening beet-shredding blade. The outward face, namely a front face of an outspread part of a blade edge of a blade body is provided with a hard layer of which the hardness is larger than that of the other inward face, namely a back face. One end of the blade body is provided with an outward convex undee outspread part of the blade edge, and the top end of the outspread part of the blade edge is a cutting edge. The other end of the blade body is provided with at least two fixed slots used for installation. The making method for the present invention is carried out according to the following procedures: A. material selection; B. molding technology; C. heat treatment technology; D. processing technology. The present invention has simple structure, simple making method and easy making. After being used, the present invention is self-sharpening during work, and the quality of beet strips which are shredded is improved, so the production efficiency is raised.

Description

Self-sharpening beet slicing blade and manufacture method thereof

The present invention relates to be used for the shredding knife and the processing technique field thereof of beet slicing, relate in particular to a kind of self-sharpening beet slicing blade and manufacture method thereof.

The beet slicing blade is the requisite running stores of beet-sugar factory; Beet belongs to piece root fruit, contains a large amount of pectin, and the leaching of its sugar part need be carried out a process with hot-water soak to the dish silk; As fruit and vegetable silk gage distortion, broken silk amount greatly, thick cossettes sugar part does not also thoroughly bubble out, but thin and a large amount of broken cossettes are because oversoaking and soft mashed, pectin also bubbles out with sugar part, the rough crenellated phenomena that is prone to of cossettes the juice purity of leaching descended, if will fragment into broken silk soon in immersion, therefore, the quality of cossettes quality directly influences the production process of beet sugar manufacture; Cause one of ropy reason of cossettes to be because the easily passivation in use of beet slicing blade, as name be called in No. 892085096 utility application of " beet slicing ripple blade " as described in blade with regard to the problem existing.If frequently change diffusion knife, will reduce production efficiency, make the reason of the easy passivation of diffusion knife be that the hardness of diffusion knife is lower.But, if the hardness of diffusion knife one height not only can easily cause the tipping phenomenon because of toughness descends, and sharpening is difficult to also carry out.

One of purpose of the present invention is to overcome the deficiency of prior art and proposes a kind of self-sharpening beet slicing blade.

Two of purpose of the present invention is to overcome the deficiency of prior art and the manufacture method that proposes a kind of self-sharpening beet slicing blade.

One of purpose of the present invention realizes by following measure: this self-sharpening beet slicing blade, its material is a steel plate, one end of its cutter hub has the wavy edge extendible portion of trilateral of outside protrusion, and the top of this part is a cutting edge, the other end of cutter hub has at least two pickup grooves that are used to install, it is big low temperature carbonitrided case than the back side that the front of described edge extendible portion has hardness, its bed thickness is 0.15 to 0.20 millimeter, its hardness be 55 the degree to 59 the degree HRC, the hardness at the back side be 10 the degree to 20 the degree HRC.

Two of purpose of the present invention is undertaken by following steps:

A, selection: select mild steel plate for use, and tailor into required blade sizes;

B, moulding process: be processed into desired shape;

C, thermal treatment process: carry out the low temperature carbonitriding;

D, complete processing: the hard formation at the blade back side is removed.

Wherein, material selection by weight percentage carbon content be 0.1% to 0.3% Carbon Steel Plate or structural steel and iron; The steel plate that to tailor earlier before moulding process is smoothed with friction press, and one side roughly ground, finish the fixed processing groove with milling machine then, strike out the blade of required curved shape again with friction press, mill out integer deburring again with the milling machine waveform blade tooth that floated finish is promptly positive then; Carry out the low temperature carbonitriding in furnace temperature is 560 ° to 580 ° scope, alloying layer thickness is controlled at 0.15 to 0.20 millimeter, and hardened face hardness is that 55 degree are to 59 degree HRC; Blade before complete processing that thermal treatment is good is smoothed, and removes the hard formation at the blade back side then with emery wheel, mills out with the waveform blade tooth of milling machine with the back side again, carries out surface finish at last.

The advantage of this self-sharpening beet slicing blade is: simple in structure, its manufacture method is simple, makes easily; After the use, just energy self-sharpening at work, thereby within 72 hours, do not need the tool changing sharpening, thus improved the chopping work efficiency, and the blade of changing is because of the lower easily sharpening of back side hardness, thereby can save sharpening greatly and can reduce loss to the sharpening instrument man-hour again; Because this blade easily keeps sharp state work, thereby makes the quality of the cossettes of cutting that significant raising arranged, and the loss in the beet sugar manufacture technology is reduced greatly, and improved production efficiency.

Below in conjunction with accompanying drawing and most preferred embodiment the present invention is described in further detail:

Fig. 1 is the elevational schematic view of self-sharpening beet slicing blade most preferred embodiment of the present invention;

Fig. 2 looks synoptic diagram for the master of Fig. 1;

Fig. 3 is that the A-A of Fig. 2 is to sectional view;

Fig. 4 is that the B-B of Fig. 2 is to sectional view;

Fig. 5 is the schematic top plan view of Fig. 2;

Coding among the figure is respectively: 1 is cutter hub, and 2 is the edge extendible portion, and 3 is cutting edge, and 4 is the front of edge extendible portion, and 5 is the back side of edge extendible portion, and 6 is hard formation, and 7 is pickup groove.

As Fig. 1,2,3, shown in 4 and 5, one end of the cutter hub 1 of this self-sharpening beet slicing blade has the wavy edge extendible portion 2 of trilateral of outside protrusion, the top of this edge extendible portion 2 is a cutting edge 3, promptly positive 4 one deck hardness is arranged is the hard formation 6 at the back side 5 greater than outside another side to the outside one side of edge extendible portion 2, the thickness of its hard formation 6 is 0.15 to 0.20 millimeter, the hardness in its front 4 is that 55 degree are to 59 degree HRC, and the hardness at the back side 5 is that 10 degree are to 20 degree HRC, therefore, the present invention in use, its front 4 is difficult for being worn, and the back side 5 easily is worn, and so just easily keeps the acutance of cutting edge 3, and does not reduce the toughness of this self-sharpening beet slicing blade, thereby be not prone to the tipping phenomenon, thereby prolonged work-ing life; The other end of cutter hub 1 has two pickup grooves that are used to install 7, so that self-sharpening beet slicing blade is fixed on the beet slicer.

This self-sharpening beet slicing blade manufacturing method is undertaken by following step:

A, selection: select that thickness is 8 millimeters, carbon content is 0.1% to 0.3% Carbon Steel Plate or structural steel and iron by weight percentage for use, and tailor into the wide 88mm of being, long for 200mm or wide for 88mm, longly be the required blade sizes of 165mm:

B, moulding process: the steel plate that will tailor is smoothed with 50 tons of type friction presses earlier, and will simultaneously roughly grind with surface grinding machine, finish processing with X62W type milling machine then to pickup groove, strike out the blade of required curved shape again with 100 tons of friction presses, mill out integer deburring again with the X62W type milling machine wavy blade tooth of trilateral that floated finish is promptly positive then;

C, thermal treatment process: carry out the low temperature carbonitriding in furnace temperature is 560 ° to 580 ° scope, alloying layer thickness is controlled at 0.15 to 0.20 millimeter, and hardened face hardness is that 55 degree are to 59 degree HRC.

D, complete processing: the blade that thermal treatment is good is smoothed, and removes the hard formation at the blade back side then with emery wheel, preferably removes the infiltration layer of 0.1 millimeter of backside surface, with X62W type milling machine the wavy blade tooth of the trilateral at the back side is milled out again, carries out surface finish at last.

Claims

1, a kind of self-sharpening beet slicing blade, its material is a steel plate, one end of its cutter hub 1 has the wavy edge extendible portion 2 of trilateral of outside protrusion, and the top of this part is a cutting edge 3, the other end of cutter hub 1 has at least two pickup grooves that are used to install 7, the front 4 that it is characterized in that described edge extendible portion 2 has hardness and is big low temperature carbonitrided case 6 than the back side 5, its alloying layer thickness is 0.15 to 0.20 millimeter, its hardness be 55 the degree to 59 the degree HRC, the hardness at the back side 5 be 10 the degree to 20 the degree HRC.

2, according to the self-sharpening beet slicing blade of claim 1, it is characterized in that: described steel plate is mild steel plate or structural steel and iron, and its carbon content is 0.1% to 0.3% by weight percentage.

3, a kind of manufacture method that is used for claim 1 or 2 described self-sharpening beet slicing blades, comprise that selection is tailored, moulding process, thermal treatment process and four steps of complete processing, it is characterized in that: wherein thermal treatment process is described blade to be carried out the low temperature carbonitriding handle, its furnace temperature is 560 ℃ to 580 ℃, alloying layer thickness is 0.15 to 0.20 millimeter, and hardened face hardness is that 55 degree are to 59 degree HRC; Complete processing comprises the hard formation of removing the blade back side 5 with emery wheel.

4, manufacture method according to claim 3 is characterized in that: wherein selection is tailored and is meant and selects described mild steel plate for use, and makes required blade sizes; The steel plate that to tailor earlier before the moulding process is smoothed with friction press, and one side is roughly ground; Moulding process comprises with milling machine to be finished pickup groove processing, strikes out the blade of required curved shape again with friction press; With milling machine floated finish is milled out the wavy blade tooth of trilateral then and form the front 4 of described blade, integer deburring again; Blade before complete processing that thermal treatment is good is smoothed; Complete processing mills out the wavy blade tooth of the trilateral at the back side 5 with milling machine after also comprising the hard formation of removing the blade back side 5, carries out surface finish at last.