KR101825997B1 - Guillotine shear blade block and guillotine shear device using alloy steel having high hardness, high shock withstand and high anti-abrasion - Google Patents

Abstract

The present invention relates to a guillotine shear blade block and a guillotine shear device using an alloy steel having a high hardness, high shock resistance, and high abrasion resistance. According to the present invention, the guillotine shear blade block comprises: a blade block body (11) to cut a scrap; and one or more penetrating holes (12-1, 12-2) formed in a thickness direction of the blade block body (11). According to the present invention, the guillotine shear device comprises: a frame (35); guide grooves (36-1, 36-2) vertically extended and formed on both side surfaces of the frame (35); and an operation plate (40) movably connected along the guide grooves (36-1, 36-2). One or more of the guillotine shear blade blocks (10) are horizontally fastened with a bottom side of the frame (35). One or more of the guillotine shear blade blocks (10) are fastened with a bottom side of the operation plate (40) by being inclined by a pre-determined inclination angle. According to the present invention, the alloy steel for the guillotine shear blade comprises: 0.40-0.50 wt% of carbon (C); 0.50-1.00 wt% of silicon (Si); 0.50-1.50 wt% of manganese (Mn); 1.0-1.2 wt% of chrome (Cr); 1.5-2.5 wt% of nickel (Ni); 0.30-1.30 wt% of molybdenum (Mo); and remaining iron (Fe). According to the present invention, in a guillotine shear blade, a hardness is maintained from a surface layer unit to a deep layer unit by using the alloy steel having a high hardness, high shock resistance, and high abrasion resistance. In addition, the present invention is able to remarkably increase the time to use and to reduce costs at the same time.

Description

TECHNICAL FIELD [0001] The present invention relates to a guillotine shear blade block and a guillotine shear device using a high hardness, high impact resistance and high abrasion resistance alloy steel, and a guillotine shear blade block and guillotine shear device using the same,

The present invention relates to a guillotine shear blade, and more particularly, to a guillotine shear blade for shearing, which can maintain the same hardness from a surface layer portion to a deep portion portion using a high hardness, high impact resistance and high abrasion resistance alloy steel, Lt; / RTI > device.

Guillotine shear blade is a knife used for cutting steel products such as steel scrap, heavy plate and cold rolled plate to be charged into an electric furnace. It is used in very poor condition, so it is required to have high hardness, impact resistance (toughness), abrasion resistance Should be combined at the same time.

SKT-4, SKD-11, SKD-61, etc. are used in JIS standards for knife materials used for cutting steel products.

Specifically, SKT-4 is mainly used when scrap cutting and high-strength hot-rolled steel plate have a working pressure capacity of 800 tons or less, but when it is over 1000 tons in size, toughness and hardness are low.

SKD-11 has a very high hardness of 60 HRc, but has a toughness of less than about 2 J (Charpy V-notch), which is only usable for a small knife and insufficient toughness for use in a relatively large knife.

In addition, SKD-61, which has high heat hardness and excellent resistance to thermal cracking and abrasion, is mainly used as a tool steels for heat treatment. In order to be used as a guillotine shear knife material requiring both impact resistance and abrasion resistance, mechanical properties, Is known to be insufficient.

Further, in order to obtain high hardness, such materials must be subjected to surface heat treatment at a high temperature after material processing. In the case of the blade using the surface-heat-treated material, the surface heat treatment section wears due to wear and tends to break due to a strong impact, and as a result, shearing is performed in a state in which the hardness of the surface layer can not withstand, There is a problem that the use time is shortened and thus the manufacturing cost increases.

In addition, the blades produced through the heat treatment have a problem that it is difficult to cut a high strength material of 500 MPa or more, and there is also a problem of deterioration of physical properties such as hardness and tensile strength due to a change in texture at high temperature cutting.

The problem to be solved by the present invention is that the hardness, the high impact resistance and the high abrasion resistance are maintained, the same hardness can be maintained from the surface layer portion to the deep layer portion, and the hardness becomes stronger when shocked, To a Gilotin shear blade block and a Gilotin shear device using alloy steels capable of reducing manufacturing costs.

In order to solve the above-described problems, an embodiment of the present invention includes a blade block body (11) for cutting scrap; And at least one through hole (12-1, 12-2) penetrating through the blade block body (11) in the thickness direction of the blade block body (11).

In addition, another embodiment of the present invention includes a frame 35; Guide grooves 36-1 and 36-2 formed on both sides of the base frame 35 in the vertical direction; And a movable plate (40) movably connected along the guide grooves (36-1, 36-2), wherein at least one of the guillotine shear blade blocks (10) according to claim 1 or 2, Wherein at least one of the guillotine shear blade blocks 10 according to the first or second aspect is tilted at a predetermined inclination angle below the movable plate 40 to be fastened and fixed to the lower portion of the frame 35, To a guillotine shear cutting device.

In another embodiment of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: 0.40 to 0.50% of carbon, 0.50 to 1.00% of silicon, 0.50 to 1.50% of manganese, 0.5 to 2.0% , 1.5 to 2.5% of nickel (Ni), 0.30 to 1.30% of molybdenum (Mo), and the balance of iron (Fe).

The guillotine shear blade and guillotine shear cutting device of the present invention can maintain the same hardness from the surface layer portion to the deep layer portion by using an alloy steel having high hardness, tensile strength, impact resistance and abrasion resistance, Hardness can be increased after use. Therefore, the use time can be increased by at least 30% over the conventional shear blade.

Further, in the conventional production of shear blades, since the post-processing step by the high-temperature heat treatment after the material processing is not required, the inherent characteristics of the material can be maintained without deteriorating the properties such as lowering of hardness and lowering of tensile strength by high- , The cost can be reduced more efficiently than the conventional process.

Further, since the guillotine shear blade of the present invention can be manufactured in a partial splitting manner, the work process is much easier when the blades are replaced, and the work speed is increased, thereby improving the process efficiency.

1 is a perspective view showing a guillotine shear blade block according to a first embodiment of the present invention.
2 is a cross-sectional view along the line AA of the guillotine shear blade block of Fig. 1;
Fig. 3 is a cross-sectional view along the BB line of the guillotine shear blade block of Fig. 1;
4 is a perspective view showing a guillotine shear blade block and an inclined support block according to a second embodiment of the present invention.
5 is a perspective view showing the guillotine shear device of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the technical idea of the present invention. In the following description, numerous specific details are set forth, such as specific elements, which are provided to aid a more thorough understanding of the present invention, and it is to be understood that the present invention may be practiced without these specific details, It will be obvious to those who have. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a perspective view showing a guillotine shear blade block according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view along the AA line of the Guillotine shear blade block of FIG. 1, Sectional view taken along line BB of Fig.

Referring to FIG. 1, a guillotine shear blade block 10 according to a first embodiment of the present invention is a component for shearing a scrap at a predetermined size, and includes a blade block body 11 And through holes 12-1 and 12-2.

The blade block body 11 is made of an alloy steel having high hardness, impact resistance and abrasion resistance, and is preferably formed in a rectangular parallelepiped shape as shown in FIG. 1, but the present invention is not limited thereto.

The through holes 12-1 and 12-2 are formed by bolt-nuts to fix the blade block body 11 to a lower portion of a movable plate 40, (11) in the thickness direction. Although two through holes 12-1 and 12-2 are shown in FIG. 1, the present invention is not limited thereto, and the number of the through holes may be one or more than three.

4 is a perspective view showing a guillotine shear blade block and an inclined support block according to a second embodiment of the present invention. In the following description of the second embodiment of the present invention, the same components as those of the first embodiment will be described in detail with reference to a configuration which is different from that of the first embodiment.

Referring to FIG. 4, the guillotine shear blade block 10 according to the second embodiment of the present invention includes side holes 13-1, 13-2, 13-3, and 13-4.

Four side holes 13-1, 13-2, 13-3, and 13-4 may be formed on at least one of the longitudinal side surfaces of the guillotine shear blade block 10. Although four side holes 13-1, 13-2, 13-3, and 13-4 are shown in FIG. 4, the present invention is not limited thereto. The side holes may be three or less, or five or more Can be formed.

Since the threads are formed in the side holes 13-1, 13-2, 13-3, and 13-4, the inclined support block 20, which will be described later, is fixed to the guillotine shear blade block 10 To the longitudinal side surfaces of the base plate.

4, the inclined support block 20 is formed in a hexahedron shape having an inclined surface, and the through holes 23-1, 23-2, 23-3, and 23-4 are formed in the thickness of the inclined support block 20 4 directions. At this time, it is preferable that the inclined support block 20 is made of an alloy steel of the same material as the blade block body 11.

5 is a perspective view showing the guillotine shear device of the present invention. A guillotine shear device (30) according to the present invention comprises a frame (35) and a movable plate (40).

The frame 35 is configured with a substantially quadrangular frame so as to form a rectangular opening, and each component can be installed in the frame 35.

On both sides of the frame 35, guide grooves 36-1 and 36-2 for guiding the movable plate 40 so as to be vertically movable are formed, respectively. At this time, the movable plate 40 can be driven up and down along the guide grooves 36-1 and 36-2 by a hydraulic, pneumatic or motor driven actuator (not shown).

A plurality of guillotine shear blade blocks 10-1, 10-2, 10-3 may be horizontally fastened to the lower portion of the frame 35 with the same height.

A plurality of guillotine shear blade blocks (10-4, 10-5, 10-6) can be slantingly fastened to the lower portion of the movable plate (40). At this time, the angle of inclination is preferably in the range of about 7 degrees to 15 degrees with respect to the horizontal.

The guillotine shear blade blocks 10-4 and 10-6 positioned on both sides of the plurality of guillotine shear blade blocks 10-4, 10-5 and 10-6 fastened and fixed to the lower portion of the movable plate 40, The slant supporting blocks 20-1 and 20-2 are fastened to the outer side surfaces of the slant supporting blocks 20-1 and 20-2, respectively. Therefore, the plurality of guillotine shear blade blocks 10-4, 10-5 and 10-6 are guided by the two inclined support blocks 20-1 and 20-2 in the guide grooves 36-1 and 36-2 So that it can be moved in the vertical direction.

Scrap is formed by a plurality of guillotine shear blade blocks 10-4, 10-5, 10-6 fixed to the lower portion of the movable plate 40 and a plurality of guillotine shear blade blocks 10-1 , 10-2, 10-3) while being slid. Therefore, it is preferable that the edges of these sliding-contacting guillotine shear blade blocks 10-1, 10-2, 10-3, 10-4, 10-5, and 10-6 are at right angles.

According to the guillotine shear device 30 of the present invention, three guillotine shear blade blocks 10-1, 10-2 and 10-3 are horizontally fastened and fixed to the lower portion of the frame 35, A plurality of guillotine shear blade blocks 10-4, 10-5, and 10-6 are guided by guide slits 36-1 and 36-2 by two inclined support blocks 20-1 and 20-2, The scrap can be cut more efficiently by the movable plate 40 being operated.

Further, since the guillotine seardiabis 30 of the present invention includes a plurality of guillotine shear blade blocks 10-1, 10-2, 10-3, 10-4, 10-5 and 10-6, It is more economical because only a part of the guillotine shear blade block worn during maintenance can be replaced.

The guillotine shear blade blocks 10-1, 10-2, 10-3, 10-4, 10-5, and 10-6 of the present invention and the alloy steel constituting the inclined support blocks 20-1 and 20-2 Will be described in detail.

The alloy steels for guillotine shear blades according to one embodiment of the present invention may contain 0.40 to 0.50% of carbon (C), 0.50 to 1.00% of silicon (Si), 0.50 to 1.50% of manganese (Mn) To 2.0% of nickel, 1.5 to 2.5% of nickel, 0.30 to 1.30% of molybdenum, and the balance of iron (Fe).

In one embodiment, the alloy steel for guillotine shear blades may further contain 0.015% or less of phosphorus (P), 0.010% or less of sulfur (S), or 0.004% or less of boron (B) as impurities.

In one embodiment, the alloy steel for guillotine shear blades comprises, by weight percent, 0.47% or less of carbon (C), 0.70% or less of silicon (Si), 1.00% or less of manganese (Mn) ), 0.010% or less of chromium (Cr), 1.2% or less of nickel (Ni), 2.0% or less of molybdenum (Mo), 0.004% or less of boron (b), and the balance of iron (Fe).

In one embodiment, the alloy steels for guillotine shear blades comprise 0.45 to 0.47% carbon, 0.50 to 0.70% silicon, 0.80 to 1.00% manganese, 1.0 to 1.2% chromium (Cr) Of phosphorus (B), 0.015% or less of phosphorus (P), 0.010% or less of sulfur (S), and 0.02% or less of phosphorus (B) Iron (Fe).

Carbon (C) contained in alloy steels for guillotine shear blades according to one embodiment of the present invention has an effect of increasing hardness and strength, and has an effect of improving abrasion resistance by forming carbide.

The content of carbon (C) is preferably 0.40 to 0.50%, more preferably 0.47% or less, and still more preferably 0.45% or less, in view of securing appropriate hardness and toughness, To 0.47%.

Silicon (Si) contained in alloy steels for guillotine shear blades according to one embodiment of the present invention acts as a deoxidizer, and the oxides in the molten steel combine with silicon to form silicon oxide, so that floating separation can be facilitated.

The content of silicon (Si) is preferably 0.50 to 1.00%, more preferably 0.70% or less, still more preferably 0.50 to 0.70%. When the content of silicon (Si) is less than the above range, the deoxidation effect is insufficient and the hardness is slightly increased, which may interfere with crystal growth due to heating. If the content exceeds the above range, the ductility may be lowered.

The manganese (Mn) contained in the alloy steels for guillotine shear blades according to one embodiment of the present invention can increase the incombustibility, increase the strength, and combine with sulfur to increase the machinability and prevent the brittleness.

The content of manganese (Mn) is preferably 0.50 to 1.50%, more preferably 1.00% or less, still more preferably 0.80 to 1.00%. When the content of manganese (Mn) is less than the above range, the hardness and strength may be lowered, and if it exceeds the above range, cracking and distortion may occur in the subsequent processing.

The chromium (Cr) contained in the alloy steel for a guillotine shear blade according to an embodiment of the present invention forms a fine carbide, exhibits an effect of improving abrasion resistance and improving corrosion resistance.

The content of chromium (Cr) is preferably 0.5 to 2.0%, more preferably 1.2% or less, still more preferably 1.0 to 1.2%. When the content of chromium (Cr) is less than the above range, carbide formation is not sufficient and there is a fear that the wear resistance is lowered. If the content exceeds the above range, the formation of coarse equilibrium carbides that suppress the recovery of toughness may be promoted .

Nickel (Ni) contained in alloy steels for guillotine shear blades according to one embodiment of the present invention exhibits a solid solution strengthening effect and is added for ensuring the toughness of the base.

The content of nickel (Ni) is preferably 1.5 to 2.5%, more preferably 2.0% or less, still more preferably 1.8 to 2.0%. If the content of nickel (Ni) is less than the above range, the hardness may be improved but the toughness may be deteriorated. If the content exceeds the above range, the hardness and toughness may be lowered due to an increase in the degree of thermal deterioration.

Molybdenum (Mo) contained in alloy steels for guillotine shear blades according to one embodiment of the present invention is an important carbide-forming element and has an effect of improving hardenability, high temperature strength and corrosion resistance.

The content of molybdenum (Mo) is preferably 0.30 to 1.30%, more preferably 0.80% or less, still more preferably 0.60 to 0.80%. When the content of molybdenum (Mo) is less than the above range, the secondary hardenability is small and it is difficult to improve the toughness. If the content is higher than the above range, the carbide formation area may be reduced and the hardness may be lowered.

In one embodiment, such alloyed steel may be fabricated with guillotine shear blades of desired shape and structure through suitable processing steps.

Specifically, the alloy steel can be processed into a guillotine shear blade through a process step consisting of drilling, counter shinking, tapping, turning, and milling.

During machining, it is desirable to work with high speed steel or hardened tools, and it is desirable to minimize vibration whatever type of machining equipment is used.

In this case, it is preferable that the processing heat generation temperature is maintained at 200 占 폚 or lower.

Particularly, the alloy steel according to an embodiment of the present invention is characterized in that it does not require a high-temperature heat treatment process for hardness improvement after material processing.

In the case of alloy steels used in conventional guillotine shear blades, it is necessary to perform high temperature heat treatment, for example, heat treatment at a temperature of 800 ° C or higher after material processing, to obtain desired hardness. For example, in the case of SKD-11, the hardness before heat treatment is HB 250 whereas the hardness after high temperature heat treatment is increased to HB 620. Generally, the surface layer of 0.1 to 0.3 mm is heat-treated. However, when the impact is weakened due to the shock toughness compared to the strength, the heat-treated surface layer, especially the edge portion, easily breaks, which is a main cause of the blade replacement.

In contrast, according to the present invention, the above-mentioned alloy steel having high hardness, high impact resistance and high abrasion resistance is used at the time of manufacturing the guillotine shear blades, so that high temperature heat treatment for improving the hardness after the material processing as in the prior art is not required.

According to the present invention, high hardness and tensile strength can be exhibited by cutting at a temperature of 200 DEG C or less without subjecting to high temperature heat treatment after material processing, and excellent characteristics in which the shear blade is not broken or dropped even under strong impact due to high toughness can be exhibited.

The alloy steel for a guillotine shear blade according to an embodiment of the present invention may exhibit a hardness of HB600, an impact characteristic of 20J (-40 DEG C), and a tensile strength of 2000 MPa.

Particularly, according to the present invention, since the guillotine shear blades have the same hardness value from the surface layer to the deep layer portion, they become harder when they are impacted, and the hardness can be further increased after shearing. Therefore, the use time of the blade is remarkably increased as compared with the prior art, and since the high temperature heat treatment is not required, the manufacturing cost can be reduced by cost reduction.

Further, according to the present invention, by manufacturing the shearing blade in a partial splitting manner, the process of replacing the blade can be accomplished more easily and quickly, and the process efficiency can be improved.

Claims (10)

(Ni), 1.5 to 2.5% of chromium (Cr), 1.5 to 2.5% of nickel (Ni), 0.5 to 2.0% of silicon (Si) (Mo) of 0.30 to 1.30%, and the balance of iron (Fe)
It can be used as a guillotine shear blade block without heat treatment after material processing, and the hardness remains the same from the surface layer to the deep layer
Alloy steel for guillotine shear blades.
The method according to claim 1,
The alloy steels for guillotine shear blades are impurities which further contain not more than 0.015% of phosphorus (P), not more than 0.010% of sulfur (S), and not more than 0.004% of boron (B)
Alloy steel for guillotine shear blades
3. The method of claim 2,
Wherein the alloy steels for the Gilotin shear blades contain 0.47% or less of carbon (C), 0.70% or less of silicon (Si), 1.00% or less of manganese (Mn), 0.015% or less of phosphorus (P) Of not more than 1.2% of chromium (Cr), not more than 2.0% of nickel (Ni), not more than 0.80% of molybdenum (Mo), not more than 0.004% of boron (B)
Alloy steel for guillotine shear blades.
A blade block body (11) for cutting scrap; And
And at least one through hole (12-1, 12-2) formed in the thickness direction of the blade block body (11)
The blade block body (11) is made of alloy steel for a guillotine shear blade according to claim 1
Guillotine Shear Blade Block.
5. The method of claim 4,
Further comprising at least one side hole (13-1, 13-2, 13-3, 13-4) formed on at least one of both longitudinal sides of the blade block body (11)
Guillotine Shear Blade Block.
A frame 35;
Guide grooves (36-1, 36-2) formed on both sides of the frame (35) so as to extend in the vertical direction; And
And a movable plate (40) movably connected along the guide grooves (36-1, 36-2)
At least one of the guillotine shear blade blocks (10) according to claim 4 is horizontally fastened and fixed to the lower part of the frame (35)
At least one of the guillotine shear blade blocks (10) according to claim 4 is fastened and fixed to an underside of the movable plate (40) by a predetermined inclination angle
Guillotine shear cutting device.
The method according to claim 6,
The slant support block 20 is fastened and fixed to at least one of both sides of the guillotine shear blade block 10 which is slantingly fastened to the lower portion of the movable plate 40
Guillotine shear cutting device.
The method according to claim 6,
The predetermined angle is in the range of 7 to 15 degrees relative to the horizontal
Guillotine shear cutting device.
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