KR20140034110A - A method of processing thin strips using a blast machine - Google Patents

A method of processing thin strips using a blast machine Download PDF

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Publication number
KR20140034110A
KR20140034110A KR1020130149601A KR20130149601A KR20140034110A KR 20140034110 A KR20140034110 A KR 20140034110A KR 1020130149601 A KR1020130149601 A KR 1020130149601A KR 20130149601 A KR20130149601 A KR 20130149601A KR 20140034110 A KR20140034110 A KR 20140034110A
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South Korea
Prior art keywords
work piece
workpiece
blast machine
chamber
turn table
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KR1020130149601A
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Korean (ko)
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KR101440734B1 (en
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이현호
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한국브라스트 주식회사
주식회사 한국네오브라스트
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Priority to KR1020130149601A priority Critical patent/KR101440734B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
    • B24C3/10—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces for treating external surfaces
    • B24C3/12—Apparatus using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/18—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions
    • B24C3/20—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by turntables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks

Abstract

The present invention relates to a processing method of a band type thin film using a blast machine, which processes the surface while continuously transferring a thin film (hereinafter, a ′work piece′), which has 0.05-0.5 mm of the thickness and is reeled in a roll form, into a chamber of a blast machine. The surface is processed by an abrasive injected via a nozzle while the thin film work piece passes through the inside of the chamber in the always flat state by an unloader pulling the work piece and a loading unit applying load. The present invention is characterized in that a work piece (1) of which the surface has been processed by a processing method is reeled on a bobbin positioned on a turn table (8) of an unloader (7), and that the processing method comprises a step of loading the thin film work piece (1) reeled on a bobbin in a roll form on a turn table (3) of a loading unit (2); a step of unwinding the work piece reeled on the bobbin and winding one end of the work piece on an empty bobbin positioned on the turn table (8) of the unloader (7); a step of transferring the work piece to the inside of a chamber (5) of a blast machine (4) at a speed of 1.0-6.0 m/min in the state that a rotating means (9) positioned in the unloader (7) rotates the turn table (8) in the forward direction and load is set on a rotary shaft (10) fixed to the turn table (3) of the loading unit (2); and a step of processing the surface of the work piece by injecting the #300-350 abrasive at an injection pressure of 2.5-3.5 kg/cm2 via a nozzle (11) inside the chamber (5) while transferring the work piece (1). [Reference numerals] (S100) Load work piece reeled on bobbin in roll form on turn table of loading unit; (S200) Unwind one end of work piece and wind on empty bobbin positioned on turn table of unloader with tension; (S300) Rotate turn table in forward direction with rotating means of unloader and apply load to rotary shaft fixed to turn table of loading unit to transfer work piece into chamber of blast machine with tension at speed of 1.0-6.0 m/min; (S400) Process surface of work piece by injecting #300-350 abrasive at injection pressure of 2.5-3.5 kg/cm2 via nozzle within chamber; (S500) Remove abrasives and foreign substances stuck on work piece in foreign substance removal unit; (S600) Wind surface-processed work piece on empty bobbin by rotating turn table of unloader

Description

브라스트머신을 이용한 띠 형태의 박판가공방법{omitted}A method of processing a strip-shaped thin plate using a blast machine {omitted}

본 발명은 롤(roll)형태로 감겨진 0.05-0.5mm 두께의 박판(이하 '피가공물'이라 함)을 브라스트머신의 챔버 내부로 연속 이동시키면서 표면을 가공하는 브라스트머신을 이용한 띠 형태의 박판가공방법에 관한 것으로써, 좀더 구체적으로는 언로딩부에서는 피가공물을 잡아당기고 로딩부에서는 부하를 걸어 박판의 피가공물이 항상 평편한 상태로 챔버의 내부를 통과하는 동안 노즐을 통해 분사되는 연마재에 의해 표면을 가공하도록 하는 브라스트머신을 이용한 띠 형태의 박판가공방법에 관한 것이다.The present invention provides a strip-shaped strip using a blast machine for processing a surface while continuously moving a 0.05-0.5 mm thick sheet (hereinafter referred to as a `` workpiece '') wound in a roll shape into a chamber of the blast machine. More specifically, it relates to a sheet metal processing method, and more specifically, an abrasive material which is sprayed through a nozzle while the workpiece in the sheet is loaded in the unloading part and a load is applied in the loading part while passing the inside of the chamber in a flat state at all times. It relates to a strip-shaped sheet processing method using a blast machine for processing the surface by the.

일반적으로 박판은 압연공정을 거쳐 생산되어 롤형태로 감겨 출하되기 때문에 강도보강을 목적으로 스마트폰의 기판을 접착하기 위해서는 박판의 표면을 소정의 조도를 갖도록 가공하여야만 된다.Generally, since a thin plate is manufactured through a rolling process and rolled up in a roll form, the surface of the thin plate must be processed to have a predetermined roughness in order to adhere the substrate of the smart phone for the purpose of reinforcing the strength.

종래에는 소정의 크기로 절단된 피가공물을 다이의 상면에 놓고 작업자가 샌드페이퍼를 이용하여 수작업으로 표면을 가공하였기 때문에 생산성이 저하되었음은 물론이고 가공된 표면의 균일도도 숙련정도에 따라 차이가 나는 등의 여러 가지 문제점이 발생되었다.Conventionally, since the workpiece cut to a predetermined size is placed on the upper surface of the die and the surface of the workpiece is manually processed by the operator using the sandpaper, not only the productivity is lowered but also the uniformity of the processed surface varies depending on the degree of skill There have been various problems.

본 발명은 이와 같은 종래의 문제점을 해결하기 위해 안출한 것으로써, 롤형태로 출하되는 피가공물을 긴장된 상태로 브라스트머신의 내부에 연속적으로 이동시키면서 노즐을 통해 분사되는 연마재에 의해 피가공물의 단면 또는 양면을 가공하여 언로딩부의 보빈에 감을 수 있도록 하는데 그 목적이 있다.Disclosure of the Invention The present invention has been made in order to solve such conventional problems, and it is an object of the present invention to provide an abrasive spraying apparatus, which is capable of continuously moving a workpiece shipped in a roll form into a blast machine, Or both sides thereof so as to be wound around the bobbin of the unloading portion.

상기 목적을 달성하기 위한 본 발명의 형태에 따르면, 롤형태로 보빈에 감긴 박판의 피가공물을 로딩부의 턴테이블에 로딩하는 단계와, 보빈에 감긴 피가공물을 풀어 일단을 언로딩부의 턴테이블에 위치된 빈 보빈에 감는 단계와, 언로딩부에 위치된 회전수단이 턴테이블을 정방향으로 회전시킴과 동시에 로딩부의 턴테이블에 고정된 회전축에 부하를 걸은 상태에서 피가공물을 브라스트머신의 챔버 내부에 1.0-6.0m/min의 속도로 이송시키는 단계와, 피가공물이 이송되는 과정에서 챔버 내의 노즐을 통해 #300-350 연마재를 2.5-3.5kg/cm2 분사압력으로 분사하여 피가공물의 표면을 가공하는 단계를 수행하여 표면이 가공된 피가공물을 언로딩부의 턴테이블에 위치된 보빈에 감는 것을 특징으로 하는 브라스트머신을 이용한 띠 형태의 박판가공방법이 제공된다.According to an aspect of the present invention for achieving the above object, the step of loading the workpiece of the thin plate wound on the bobbin in the form of a roll on the turntable of the loading portion, and the end of the unwinding the workpiece wound on the bobbin, the bin located on the turntable of the unloading portion Winding the workpiece in the bobbin, and rotating the turntable in the unloading part in the forward direction while simultaneously loading the workpiece into the chamber of the blast machine while applying load to the rotating shaft fixed to the turntable of the loading part. and the step of transferring the workpiece at a speed of / min, and processing the surface of the workpiece by spraying the # 300-350 abrasive at 2.5-3.5kg / cm 2 injection pressure through the nozzle in the chamber during the workpiece is transferred. A strip-shaped sheet processing method using a blast machine is provided by winding a workpiece on which a surface is processed to a bobbin positioned on a turntable of an unloading part. .

본 발명은 롤형태로 출하되는 피가공물을 브라스트머신에 긴장된 상태로 수평 또는 수직 이동시키면서 일면 또는 양면을 연속적으로 가공한 다음 언로딩부의 보빈에 자동으로 감을 수 있으므로 균일한 조도를 갖는 띠 형태의 박판을 대량 생산할 수 있는 효과를 얻게 된다.Since the workpiece shipped in the form of a roll is horizontally or vertically moved in a taut state on the blast machine and one side or both sides are continuously processed and then automatically wound on the bobbin of the unloading portion, The effect of mass production of the thin plate can be obtained.

도 1은 본 발명을 구현하는 가공기를 나타낸 정면도
도 2는 본 발명에 사용되는 브라스트머신의 정면사진
도 3은 브라스트머신의 챔버내부를 나타낸 사진
도 4는 브라스트머신의 이물질 제거부를 나타낸 사진
도 5는 이물질 제거부의 출구 측에 설치된 피가공물 당김수단을 나타낸 사진
도 6은 언로딩부를 나타낸 사진
도 7은 본 발명을 설명하기 위한 플로우 챠트1 is a front view showing a processing machine embodying the present invention;
2 is a front view of the blast machine used in the present invention;
3 is a photograph showing the inside of the chamber of the blast machine
Fig. 4 is a photograph showing the foreign matter removing unit of the blast machine
5 is a photograph showing a workpiece pulling means provided on the outlet side of the foreign matter removing unit
6 is a photograph showing the unloading portion
7 is a flowchart for explaining the present invention.

이하, 본 발명을 일 실시예로 도시한 도 1 내지 도 7을 참고하여 더욱 상세히 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 to 7 as an embodiment.

첨부도면 도 1은 본 발명을 구현하는 가공기를 나타낸 정면도이고 도 2는 본 발명에 사용되는 브라스트머신의 정면사진이며 도 7은 본 발명을 설명하기 위한 플로우 챠트로써, 본 발명은 롤형태로 보빈에 감긴 박판의 피가공물(1)을 로딩부(2)의 턴테이블(3)에 로딩(loading)하게 된다.(S100)BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view showing a processing machine embodying the present invention; Fig. 2 is a front view of a blast machine used in the present invention; Fig. 7 is a flow chart for explaining the present invention, (Not shown) to the turntable 3 of the loading unit 2. (S100)

이와 같이 로딩부(2)의 턴테이블(3)에 피가공물(1)이 감긴 보빈(도시는 생략함)을 로딩하고 나면 보빈에 감긴 피가공물(1)의 일단을 풀어 브라스트머신(4)의 챔버(5) 및 이물질 제거부(6)의 내부를 차례로 통과시켜 언로딩부(7)의 턴테이블(8)에 위치된 빈 보빈(도시는 생략함)에 긴장된 상태로 감아주게 된다.(S200)After the bobbin (not shown) wound with the workpiece 1 is loaded on the turntable 3 of the loading section 2 as described above, one end of the workpiece 1 wound on the bobbin is loosened, The chamber 5 and the inside of the foreign matter removing unit 6 in order to wind the empty bobbin (not shown) located in the turntable 8 of the unloading unit 7 in a tense state.

이러한 상태에서 언로딩부(7)에 위치된 회전수단(9)이 턴테이블(8)을 정방향으로 회전시킴과 동시에 로딩부(2)의 턴테이블에 고정된 회전축(10)에 부하를 걸어 피가공물(1)이 긴장된 상태로 브라스트머신(4)의 챔버(5) 내부에 1.0-6.0m/min의 속도로 이송시키게 된다.(S300)In this state, the rotating means 9 positioned in the unloading portion 7 rotates the turntable 8 in the forward direction and loads the rotating shaft 10 fixed to the turntable of the loading portion 2 to load the workpiece 1) to the inside of the chamber 5 of the blast machine 4 at a speed of 1.0-6.0 m / min (S300).

이 때, 피가공물(1)의 이송속도가 1.0m/min이하로 느리면 과도한 브라스트로 인해 피가공물이 변형되거나, 원하는 조도를 갖도록 가공할 수 없고, 이와는 반대로 6.0m/min이상으로 빠르면 피가공물의 표면에 줄무늬가 발생되거나, 표면의 거칠기가 고르지 않는 불량이 발생된다.At this time, if the feed speed of the work 1 is slower than 1.0 m / min, the work can not be deformed due to excessive blast or processed to have a desired roughness. On the other hand, Streaks are generated on the surface, or roughness of the surface is uneven.

상기 로딩부(2)의 턴테이블(3)에 고정된 회전축(10)에 부하를 걸어줄 때 턴테이블(3)을 역방향으로 회전시키면 피가공물(1)에 장력이 걸린 상태로 이송시킬 수 있으므로 보다 바람직하다.When the turntable 3 is rotated in the reverse direction when the load is applied to the rotary shaft 10 fixed to the turntable 3 of the loading unit 2, the work 1 can be transferred in a state in which tension is applied, Do.

전술한 바와 같이 피가공물(1)이 도 3과 같이 브라스트머신(4)의 챔버(5) 내부에 1.0-6.0m/min의 속도로 이송되는 과정에서 챔버(5) 내의 노즐(11)을 통해 #300-350 연마재를 2.5-3.5kg/cm2 분사압력으로 분사하여 피가공물(1)의 표면을 가공하게 된다.(S400)As described above, the nozzle 11 in the chamber 5 is moved in the process of being fed at a speed of 1.0-6.0 m / min into the chamber 5 of the blast machine 4 as shown in Fig. The surface of the work 1 is processed by spraying the # 300-350 abrasive with a spraying pressure of 2.5-3.5 kg / cm 2 (S400)

상기 챔버(5)의 내부를 통과하는 동안 여러 개의 노즐(11)을 통해 분사되는 연마재에 의해 표면이 가공된 상태로 도 4와 같이 이물질 제거부(6)에 도달하고 나면 에어 분사노즐(12)에서 분사되는 에어에 의해 피가공물(1)의 표면에 달라붙은 연마재 및 가공에 따라 발생된 가루를 깨끗하게 제거된 상태로 이물질 제거부(6)의 외부로 빠져나오게 된다.(S500)As shown in FIG. 4, when the surface of the air injection nozzle 12 reaches the foreign matter removing unit 6 with the surface being processed by the abrasive sprayed through the plurality of nozzles 11 while passing through the inside of the chamber 5, The dust generated by the abrasive material adhering to the surface of the work 1 and the dust generated by the machining are removed from the foreign matter removing unit 6 in a clean state by the air blown by the air injected from the dust removing unit 5 at step S500.

이렇게 빠져나온 피가공물(1)은 도 6과 같이 언로딩부(7)의 턴테이블(8)이 회전수단(9)에 의해 회전하고 있으므로 빈 보빈에 연속적으로 감기게 된다.(S600)6, since the turntable 8 of the unloading section 7 is rotated by the rotating means 9, the work 1 is continuously wound on the empty bobbin. (S600)

이러한 과정은 로딩부(2)에 위치된 보빈에서 피가공물(1)이 완전히 풀릴 때까지 연속적으로 이루어짐은 이해 가능하다.It is understood that this process is continuously performed until the work 1 is completely unwound from the bobbin placed in the loading section 2. [

한편, 상기한 바와 같은 공정으로 피가공물(1)을 가공하는 과정에서 챔버(5)의 인입 측에 토오크 커플링(13)에 의해 부하를 걸어주면 피가공물(1)을 보다 긴장된 상태로 이송시키면서 표면을 가공하게 되므로 품질의 향상을 꾀할 수 있는 장점을 갖는다.Meanwhile, when a load is applied by the torque coupling 13 to the inlet side of the chamber 5 in the course of processing the workpiece 1 in the above-described process, the workpiece 1 is transferred in a more tense state Since the surface is processed, the quality can be improved.

상기한 바와 같이 챔버(5)의 인입 측에 토오크 커플링(13)을 설치하여 피가공물(1)에 부하를 걸어 줄 때 브라스트머신(4)의 이물질 제거부(6)의 출구 측에 도 5와 같은 피가공물 당김수단(14)을 더 구비하면 브라스트머신(4)의 내부를 통과하는 과정에서 피가공물(1)을 더욱 긴장된 상태로 유지시키면서 가공할 수 있게 되는 것이다.When the torque coupling 13 is provided on the inlet side of the chamber 5 and the load is applied to the workpiece 1 as described above, the outlet of the foreign substance removing unit 6 of the blast machine 4 The workpiece 1 can be processed while maintaining the workpiece 1 in a more tense state in the process of passing through the inside of the blast machine 4. [

본 발명의 기술사상은 상기한 바람직한 실시예에 따라 구체적으로 기술되었으나, 전술한 실시예들은 그 설명을 위한 것이며, 그 제한을 위한 것이 아님을 주의하여야 한다.It is to be noted that the technical spirit of the present invention has been specifically described according to the above-described preferred embodiments, but it should be noted that the above-described embodiments are intended to be illustrative and not restrictive.

또한, 본 발명의 기술분야에서 통상의 전문가라면 본 발명의 기술사상의 범위 내에서 다양하게 변화하여 실시할 수 있음은 이해 가능한 것이다.It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

1 : 피가공물 2 : 로딩부
3, 8 : 턴테이블 4 : 브라스트머신
5 : 챔버 6 : 이물질 제거부
7 : 언로딩부 9 : 회전수단
10 : 회전축 11 : 노즐
12 : 에어분사 노즐 13 : 토오크 커플링
14 : 피가공물 당김수단1: work piece 2: loading part
3, 8: turntable 4: blast machine
5: chamber 6: foreign matter removal
7: unloading section 9: rotating means
10: rotating shaft 11: nozzle
12: air jet nozzle 13: torque coupling
14: Workpiece pulling means

Claims (6)

롤형태로 보빈에 감긴 박판의 피가공물(1)을 로딩부(2)의 턴테이블(3)에 로딩하는 단계와, 보빈에 감긴 피가공물을 풀어 일단을 언로딩부(7)의 턴테이블(8)에 위치된 빈 보빈에 감는 단계와, 언로딩부(7)에 위치된 회전수단(9)이 턴테이블(8)을 정방향으로 회전시킴과 동시에 로딩부(2)의 턴테이블(3)에 고정된 회전축(10)에 부하를 걸은 상태에서 피가공물을 브라스트머신(4)의 챔버(5) 내부에 1.0-6.0m/min의 속도로 이송시키는 단계와, 피가공물(1)이 이송되는 과정에서 챔버(5) 내의 노즐(11)을 통해 #300-350 연마재를 2.5-3.5kg/cm2 분사압력으로 분사하여 피가공물의 표면을 가공하는 단계를 수행하여 표면이 가공된 피가공물(1)을 언로딩부(7)의 턴테이블(8)에 위치된 보빈에 감는 것을 특징으로 하는 브라스트머신을 이용한 띠 형태의 박판가공방법.Loading the workpiece 1 of the thin plate wound on the bobbin in a roll form onto the turntable 3 of the loading section 2, and releasing the workpiece wound on the bobbin to turn one end of the turntable 8 of the unloading section 7 Winding to an empty bobbin positioned at the rotary shaft; and a rotating means 9 located at the unloading portion 7 rotates the turntable 8 in the forward direction, and at the same time, a rotating shaft fixed to the turntable 3 of the loading portion 2 The workpiece is transferred to the interior of the chamber 5 of the blast machine 4 at a speed of 1.0-6.0 m / min while the load is applied to (10), and the chamber in the process of transporting the workpiece 1. Process the surface of the workpiece by spraying # 300-350 abrasive at 2.5-3.5kg / cm 2 injection pressure through the nozzle 11 in (5) to freeze the workpiece (1) A strip-shaped sheet processing method using a blast machine, characterized in that the bobbin located on the turntable (8) of the loading section (7). 청구항 1에 있어서,
상기 챔버(5)의 인입 측에 토오크 커플링(13)에 의해 부하를 걸어주는 것을 특징으로 하는 브라스트머신을 이용한 띠 형태의 박판가공방법.The method according to claim 1,
A strip-shaped thin sheet processing method using a blast machine, characterized in that the load is applied to the inlet side of the chamber (5) by the torque coupling (13). 청구항 2에 있어서,
상기 브라스트머신(4)의 이물질 제거부(6)의 출구 측에 피가공물 당김수단(14)을 더 구비하는 것을 특징으로 하는 브라스트머신을 이용한 띠 형태의 박판가공방법.The method according to claim 2,
A strip-shaped thin plate processing method using a blast machine, characterized in that it further comprises a workpiece pulling means (14) on the outlet side of the debris removal portion (6) of the blast machine (4). 청구항 1에 있어서,
상기 피가공물(1)을 수평으로 이송시키면서 단면을 가공하는 것을 특징으로 하는 브라스트머신을 이용한 띠 형태의 박판가공방법.The method according to claim 1,
And a cross section is machined while horizontally feeding the work (1). 청구항 1에 있어서,
상기 피가공물(1)을 수직으로 이송시키면서 양면을 가공하는 것을 특징으로 하는 브라스트머신을 이용한 띠 형태의 박판가공방법.The method according to claim 1,
And the both sides are processed while vertically transferring the work (1). 청구항 1에 있어서,
상기 로딩부(2)의 턴테이블(3)을 역방향으로 회전시켜 피가공물(1)에 장력이 걸리도록 하면서 피가공물을 이송시키는 것을 특징으로 하는 브라스트머신을 이용한 띠 형태의 박판가공방법.The method according to claim 1,
Band-shaped thin plate processing method using a blast machine, characterized in that for rotating the turntable (3) of the loading unit 2 to transfer the workpiece while the workpiece (1) is tensioned.
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CN104044081A (en) * 2014-05-29 2014-09-17 盐城市丰特铸造机械有限公司 Shot-blast cleaning apparatus and processing technology for thin plates
CN106799681A (en) * 2017-02-27 2017-06-06 陈铭鸿 Plane roller sand-blasting machine
CN111590468A (en) * 2020-07-03 2020-08-28 常德力元新材料有限责任公司 Manufacturing device for metal thin strip with large roughness and high specific surface area

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CN104647216B (en) * 2015-03-10 2016-09-14 无锡希凯姆机械有限公司 Strip steel passing shot blasting machine

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CN1269986C (en) * 2000-10-19 2006-08-16 杰富意钢铁株式会社 Zinc-plated steel sheet and method for preparation thereof, and method for manufacturing formed article by press working
JP2003260665A (en) * 2002-03-04 2003-09-16 Jfe Steel Kk Surface finishing equipment and manufacturing method for steel plate
JP4018918B2 (en) * 2002-03-20 2007-12-05 中央発條株式会社 Shot apparatus and shot method
KR200432097Y1 (en) * 2006-09-08 2006-11-30 한국브라스트 주식회사 Shot Blast Machine

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Publication number Priority date Publication date Assignee Title
CN104044081A (en) * 2014-05-29 2014-09-17 盐城市丰特铸造机械有限公司 Shot-blast cleaning apparatus and processing technology for thin plates
CN106799681A (en) * 2017-02-27 2017-06-06 陈铭鸿 Plane roller sand-blasting machine
CN111590468A (en) * 2020-07-03 2020-08-28 常德力元新材料有限责任公司 Manufacturing device for metal thin strip with large roughness and high specific surface area
CN111590468B (en) * 2020-07-03 2021-11-23 常德力元新材料有限责任公司 Manufacturing device for metal thin strip with large roughness and high specific surface area

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