KR20190029149A - Rolled roller processing method - Google Patents

Rolled roller processing method Download PDF

Info

Publication number
KR20190029149A
KR20190029149A KR1020170116350A KR20170116350A KR20190029149A KR 20190029149 A KR20190029149 A KR 20190029149A KR 1020170116350 A KR1020170116350 A KR 1020170116350A KR 20170116350 A KR20170116350 A KR 20170116350A KR 20190029149 A KR20190029149 A KR 20190029149A
Authority
KR
South Korea
Prior art keywords
rolling roller
processing method
rolled roller
roller
heat
Prior art date
Application number
KR1020170116350A
Other languages
Korean (ko)
Inventor
최태헌
Original Assignee
(주)휴스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)휴스코 filed Critical (주)휴스코
Priority to KR1020170116350A priority Critical patent/KR20190029149A/en
Publication of KR20190029149A publication Critical patent/KR20190029149A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/005—Rolls with a roughened or textured surface; Methods for making same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/04—Treating surfaces of rolls
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/18—Rolls or rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The present invention relates to a rolled roller processing method and, more specifically, relates to a rolled roller processing method, which can easily form various patterns on a surface of a heat-treated rolled roller, and further, repeatedly form a pattern by polishing a surface of the rolled roller to be reused when a scratch is generated on the surface of the rolled roller, or the rolled roller is worn and damaged in accordance with a period of use. To achieve this, according to the present invention, the rolled roller processing method comprises the following steps of: heat treating a rolled roller of which a surface is smoothly polished; and electric discharge machining a pattern with an electric discharge machine on a surface of the rolled roller that has been heat-treated.

Description

압연롤러 가공방식{Rolled roller processing method}Rolled roller processing method [

본 발명은 압연롤러 가공방식에 관한 것으로, 더욱 상세하게는 다양한 형상의 패턴을 용이하게 형성시킬 수 있음은 물론 압연롤러의 표면에 스크레치가 발생하거나 마모되어 파손되어도 재사용이 가능하도록 하여 비용을 세이브(save)할 수 있도록 한 압연롤러 가공방식에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rolling roller processing method, and more particularly, to a rolling roller processing method capable of easily forming patterns of various shapes and reusing even if scratches or wear are caused on the surface of a rolling roller, The present invention relates to a rolling roller processing method capable of performing a rolling operation.

일반적으로 압연(Rolling)은 금속의 소성(塑性)을 이용해서 고온 또는 상온의 금속재료를 회전하는 2개의 롤러 사이로 통과시켜서 판(板), 봉(棒), 관(管), 형재(形材) 등의 여러 가지 형태로 가공하는 방법이다.Rolling generally uses plasticity of a metal to pass a hot or hot metal material through two rotating rollers to form a plate, a rod, a pipe, a shape ) And the like.

한편, 금속판에 내측 또는 외측에 강성을 높이거나 외관을 고급스럽거나 미려하게 보이도록 다양한 패턴을 형성시키도록 금속판에 직접 접촉되는 작업롤러(Work Roll)의 표면을 가공하여 패턴을 형성한다.On the other hand, a surface of a work roll which is in direct contact with a metal plate is processed to form a pattern so as to increase rigidity on the inside or outside of the metal plate or to form various patterns so that the appearance becomes luxurious or beautiful.

이와 같은 종래의 작업롤러의 표면에 패턴을 형성하기 위한 가공방법으로는 CNC선반 또는 NC선반에 구성된 가공툴(grinding tool)을 이용하여 롤러의 표면에 패턴을 형성하는 공정을 마친 후 경도를 높이기 위해 열처리(heat treatment)하는 공정이 이루어진다.As a processing method for forming a pattern on the surface of such a conventional working roller, after a process of forming a pattern on the surface of the roller using a CNC lathe or a grinding tool configured on an NC lathe, A heat treatment process is performed.

그러나 상기 종래와 같은 가공방식으로 제작된 압연롤러는 표면에 스크레치가 발생하거나 마모되어 파손되면 재사용하지 못하는 문제가 있다.However, there is a problem that the rolling roller manufactured by the above-described conventional processing method can not be reused if scratches are generated on the surface or when the surface is worn and damaged.

그 이유는, 열처리에 의해 경도가 높아져 CNC선반 또는 NC선반의 가공툴(grinding tool)로 재차 패턴을 가공할 수 없기 때문이다.This is because the hardness is increased by the heat treatment and the pattern can not be machined again by the CNC lathe or the NC lathe grinding tool.

더하여 종래와 같이 CNC선반 또는 NC선반의 가공툴로 다양한 형상의 패턴을 가공하는데 어려움이 있다.In addition, it is difficult to process patterns of various shapes using CNC lathe or NC lathe machining tools as in the prior art.

따라서 압연롤러의 표면에 스크레치가 발생하거나 마모되어 파손되면 압연롤러를 재사용할 수 있도록 함은 물론 다양한 패턴을 용이하게 가공할 수 있는 새로운 압연롤러 가공방식이 절실히 필요하다.Therefore, if a scratch is generated on the surface of the rolling roller or if the surface is worn and broken, a new rolling roller processing method capable of reusing the rolling roller and easily processing various patterns is desperately needed.

대한민국 특허등록 제1457494호가 등록된 바 있다.Korean Patent Registration No. 1457494 has been registered.

본 발명은 상기와 같은 종래 기술의 제반 문제점을 해소하기 위하여 안출된 것으로서, 본 발명의 기술적 구성에 의한 목적은, 열처리한 압연롤러의 표면에 다양한 패턴을 용이하게 형성시킬 수 있음은 물론 사용기간에 따라 압연롤러의 표면에 스크레치가 발생하거나 마모되어 파손된 압연롤러의 재사용이 가능하도록 한 압연롤러 가공방식을 제공한다.SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the technical composition of the present invention to provide a method and apparatus for forming various patterns on a surface of a heat- The present invention provides a rolling roller processing method capable of reusing a rolled roller caused by scratching or abrasion on the surface of the rolling roller.

이러한 목적 달성을 위한 본 발명은 표면이 매끄럽게 연마되어 구비된 압연롤러를 열처리하는 단계; 및 상기 열처리된 압연롤러의 표면에 방전가공기를 이용하여 패턴을 방전가공하는 단계;를 포함하는 압연롤러 가공방식을 제공한다.According to another aspect of the present invention, there is provided a method of manufacturing a metal roller, comprising: heat treating a rolling roller having a surface polished smoothly; And a step of discharging the pattern on the surface of the heat-treated rolling roller by using an electric discharge machine.

또한, 상기 방전가공하는 단계는, 압연롤러에 표면처리 하는 단계를 더 포함하는 것을 특징으로 한다.In addition, the step of performing the electric discharge machining further includes the step of surface-treating the rolling roller.

본 발명에 따르면, 패턴가공시 방전가공기를 사용하므로 열처리한 압연롤러의 표면에 다양한 패턴을 용이하게 형성시킬 수 있고, 특히 사용기간에 따라 압연롤러의 표면에 스크레치가 발생하거나 마모되어 파손되면 압연롤러의 표면을 매끄럽게 연마시킨 후 방전가공기로 재차 패턴을 형성시키므로 압연롤러를 수차례 재사용할 수 있음에 따라 비용을 세이브(save)할 수 있는 이점이 있다.According to the present invention, various patterns can be easily formed on the surface of the heat roller after use of an electric discharge machine in the pattern processing. Especially, when the surface of the roller is scratched or worn and damaged, Since the surface of the roller is polished smoothly and then the pattern is formed again by the electric discharge machine, the rolling roller can be reused several times, and the cost can be saved.

또한, 최초 압연롤러를 열처리시키면 이후에 재차 열처리할 필요가 없으므로 열처리 비용을 세이브(save)할 수 있는 이점이 있다.In addition, if the initial rolling roller is heat-treated, there is no need to carry out a heat treatment thereafter, and there is an advantage that the heat treatment cost can be saved.

또한, 압연롤러를 방전가공시 전극에 의해 재차 압연롤러가 열처리되므로 경도가 높아지는 이점이 있다. In addition, since the rolling roller is heat-treated again by the electrode during the discharge processing of the rolling roller, there is an advantage that the hardness is increased.

도 1은 본 발명에 따른 압연롤러 가공방식의 흐름도.1 is a flow chart of a rolling roller processing method according to the present invention;

이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의하여 더욱 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

하기에서 본 발명을 설명함에 있어, 관련된 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐를 수 있다고 판단되는 경우에는 그 상세한 설명은 생략할 것이다.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 unnecessary.

그리고 후술되는 용어들은 본 발명에서의 기능을 고려하여 설정된 용어들로서 이는 생산자의 의도 또는 관례에 따라 달라질 수 있으므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

도 1은 본 발명의 실시예에 따른 압연롤러 가공방식을 도시하는 흐름도이다.1 is a flow chart showing a rolling roller processing method according to an embodiment of the present invention.

도 1을 참조하여 본 발명의 압연롤러 가공방식을 설명하면 다음과 같다.The rolling roller processing method of the present invention will be described with reference to FIG.

먼저, 본 발명은 열처리한 압연롤러의 표면에 다양한 패턴을 용이하게 형성시킬 수 있음은 물론 사용기간에 따라 압연롤러의 표면에 스크레치가 발생하거나 마모되어 파손되면 압연롤러의 표면을 연마하여 재차 패턴을 형성시킬 수 있도록 하여 재사용이 가능하도록 한 압연롤러 가공방식에 관한 것으로, 이와 같은 압연롤러 가공방식은 열처리 단계(S100) 및 방전가공 단계(S200)가 순차적으로 진행된다.First, the present invention can easily form various patterns on the surface of a heat-treated rolling roller, and if a scratch is generated or worn on the surface of the rolling roller in accordance with the use period, the surface of the rolling roller is polished, The present invention relates to a rolling roller processing method capable of forming and reusing a rolled sheet such that the sheet can be formed and reused. In such a rolling roller processing method, a heat treatment step (S100) and an electric discharge machining step (S200) proceed sequentially.

열처리 단계(S100)는 표면이 매끄럽게 연마되어 구비된 작업롤러(Work Roll)(이하, '압연롤러'라 통칭함)를 열처리 하는 것으로, 압연롤러의 경도를 높이기 위한 것이다.The heat treatment step S100 is to heat the work roll (hereinafter, referred to as "rolling roller") provided with the surface smoothly polished to increase the hardness of the rolling roller.

열처리(heat treatment)는 가열 ·냉각 등의 조작을 적당한 속도로 하여 그 재료의 특성을 개량하는 조작으로 온도에 의해서 존재하는 상(相)의 종류나 배합이 변하는 재료에 쓰이는 것으로, 고온에서 급랭(急冷)하여 보통이면 일어날 변화를 일부 또는 전부 저지하여 필요한 특성을 내는 담금질, 한 번 담금질한 후 비교적 저온에서 가열하여 담금질로써 저지한 변화를 약간 진행시켜 꼭 알맞은 특성을 가지게 만드는 뜨임, 가열하여 천천히 식힘으로써 금속재료의 뒤틀림을 바로잡거나 상의 변화를 충분히 끝나게 하여 안정상태로 만드는 풀림 등이 있다Heat treatment is a process for modifying the properties of a material at an appropriate speed by heating or cooling. It is used for materials that change the type and composition of phases present by temperature. Quenching) to quench some or all of the changes that normally occur, and quenching once to quench the tempering, heating the quartz at a relatively low temperature to quench the changes slightly, And there is a loosening which makes the metal material twist correct or the phase change is sufficiently finished to make it stable state

이와 같은 열처리 방법은 이미 공지되어 널리 사용되고 있는 방법으로 자세한 설명은 생략하도록 한다.Such a heat treatment method is well known and widely used, and a detailed description thereof will be omitted.

방전가공 단계(S200)는 상기 열처리 단계를 마친 압연롤러의 표면에 패턴을 방전가공하는 것이다.The discharge machining step (S200) is to discharge the pattern on the surface of the rolling roller after the heat treatment step.

이때, 압연롤러의 표면에 패턴을 가공시 방전가공기를 이용하여 가공한다.At this time, when the pattern is processed on the surface of the rolling roller, it is processed by using an electric discharge machine.

그 이유는, 열처리된 압연롤러는 경도가 높아져 종래에 패턴을 가공하기 위해 사용되었던 CNC선반 또는 NC선반에 구성된 가공툴(grinding tool)로는 패턴 가공이 불가함은 물론 방전가공기를 이용하면 다양한 형상의 패턴을 용이하게 가공할 수 있기 때문이다.This is because the heat-treated rolling roller has a high hardness and can not be patterned using a CNC lathe or a NC grinding tool which has conventionally been used to process a pattern, This is because the pattern can be easily processed.

더하여 방전가공기를 이용하여 방전가공함에 따라 재차 열처리가 되므로 압연롤러의 경도를 높일 수 있기 때문이다.In addition, heat treatment is carried out again according to discharge processing using an electric discharge machine, so that the hardness of the rolling roller can be increased.

방전가공(electrospark machining)은 등유 등의 절연성이 있는 가공액 중에서, 가공 전극과 공작물과의 사이에 단속적(斷續的)으로 방전시켜, 가공 전극과 같은 단면의 형상을 공작물에 전사, 가공하는 방법이다.Electrospark machining is a method of intermittently discharging between a machining electrode and a workpiece in an insulating working fluid such as kerosene to transfer and process the shape of a cross section like the machining electrode to the workpiece to be.

방전가공기(electrical discharge machine)는 방전 현상을 이용한 공작기계로, 가공액(자등유, 물과 기름의 유탁액 등) 중에서 공작물과 전극간에 불꽃 방전을 일으키면 방전점 부근의 공작물은 매우 높은 온도로 가열되어서 용융 혹은 기화하고, 동시에 생기는 방전 압력 때문에 용융 기화부가 비산한다. 이러한 작용을 반복 수행시키는 것이 방전 가공기이며, 전극은 되도록 소모하지 않는 재료를 골라 사용한다. 이와 같은 방법에 의하면 절삭 가공이 곤란한 초경합금의 가공이나 고정밀도의 가공도 쉽게 할 수 있고, 복잡한 형상의 공작 등에 사용된다.An electrical discharge machine is a machine tool using a discharge phenomenon. When a spark discharge occurs between a workpiece and an electrode in a machining fluid (such as kerosene, water and oil emulsion), the workpiece near the discharge point is heated And melts or vaporizes, and the melting vaporization portion splashes due to the simultaneous discharge pressure. An electric discharge machine is used to repeatedly perform such an operation, and a material which is not consumed as much as the electrode is selected. According to this method, machining of cemented carbide, which is difficult to cut, and high-precision machining can be easily performed and used for machining of complex shapes.

이와 같은 방전가공기를 이용한 방전가공하는 방법은 이미 공지되어 널리 사용되고 있는 것으로 자세한 설명은 생략하도록 한다.The method of electric discharge machining using such an electric discharge machine is well known and widely used, and a detailed description thereof will be omitted.

또한, 상기 방전가공 단계(S200)는 압연롤러에 표면처리 하는 단계(S300)를 더 포함할 수 있다.Further, the electric discharge machining step (S200) may further include a step (S300) of surface-treating the rolling roller.

표면처리는(Surface Treatment)는 압연롤러의 표면에 종류가 다른 재료의 얇은 층을 침적시키는 도금 또는 코팅시키므로 내식성, 내열성, 내마모성 등을 주는 것으로, 이와 같은 표면처리는 이미 공지되어 널리 사용되고 있는 다양한 방법에 의해 수행될 수 있는 것으로 자세한 설명은 생략하도록 한다.In the surface treatment, a thin layer of a different kind of material is deposited on the surface of a rolling roller to coat or coat the surface of the roller, thereby providing corrosion resistance, heat resistance and abrasion resistance. Such surface treatment is carried out by various known and widely used methods And a detailed description thereof will be omitted.

즉, 전술한 바와 같은 압연롤러 가공방식에 의하면, 패턴가공시 방전가공기를 사용하므로 열처리한 압연롤러의 표면에 다양한 패턴을 용이하게 형성시킬 수 있고, 방전에 의해 압연롤러가 재차 열처리 되어 경도를 높일 수 있다.That is, according to the rolling roller processing method as described above, various patterns can be easily formed on the surface of the heat roller after use of the electric discharge machine during pattern processing, and the heat roller is heated again by discharging to increase the hardness .

또한, 사용기간에 따라 압연롤러의 표면에 스크레치가 발생하거나 마모되어 파손되면 압연롤러의 표면을 매끄럽게 연마한 후 방전가공기를 이용하여 재차 패턴을 형성시키므로 압연롤러를 재사용할 수 있음에 따라 비용을 세이브할 수 있다.If the surface of the rolling roller is scratched or abraded due to the period of use, the surface of the rolling roller is smoothly polished and the pattern is formed again using an electric discharge machine, so that the rolling roller can be reused, can do.

또한, 최초 압연롤러를 열처리시키면 이후에 재차 열처리할 필요가 없으므로 열처리 비용을 세이브(save)할 수 있다.In addition, if the initial rolling roller is heat-treated, it is not necessary to carry out a heat treatment thereafter, so that the heat treatment cost can be saved.

예를 들어, 열처리시킨 ø210mm의 직경을 갖는 압연롤러의 표면에 5mm 깊이로 패턴을 방전가공한 것으로 가정할 경우, 압연롤러의 표면에 스크레치가 발생하거나 패턴이 마모되어 파손되면 압연롤러의 표면을 연마기로 패턴의 가공깊이(5mm) 만큼 매끄럽게 연마시킨다.(이때, 연마된 압연롤러는 ø205mm의 직경을 갖는다.) 그런 다음 재차 압연롤러의 표면에 패턴을 방전가공한다. 이와 같은 방법을 통해 압연롤러의 직경이 ø180mm~ø160mm가 될 때까지 반복하므로 여러 번 재사용할 수 있는 것이다.For example, when it is assumed that the surface of the rolling roller having a diameter of ø 210 mm and subjected to heat treatment is subjected to a discharge processing of a pattern at a depth of 5 mm, if the surface of the rolling roller is scratched or the pattern is worn and damaged, (The polished rolled roller has a diameter of ø205 mm). Then, the pattern is discharged again on the surface of the rolling roller. Through such a method, the diameter of the rolling roller is repeated from ø180 mm to ø160 mm, so that it can be reused many times.

본 발명 압연롤러 가공방식의 기술적 사상은 실제로 동일결과를 반복 실시 가능한 것으로, 특히 이와 같은 본 발명을 실시함으로써 기술발전을 촉진하여 산업발전에 이바지할 수 있어 보호할 가치가 충분히 있다.The technical idea of the rolling roller processing method of the present invention is that the same results can be repeatedly practiced. Particularly, by implementing the present invention as described above, technology development can be promoted and contributed to industrial development.

S100 : 열처리 단계
S200 : 방전가공 단계
S300 : 표면처리 단계S100: heat treatment step
S200: discharge machining step
S300: Surface treatment step

Claims (2)

압연롤러 가공방식에 있어서,
표면이 매끄럽게 연마되어 구비된 압연롤러를 열처리하는 단계; 및
상기 열처리된 압연롤러의 표면에 방전가공기를 이용하여 패턴을 방전가공하는 단계;를 포함하는 것을 특징으로 하는 압연롤러 가공방식.
In the rolling roller processing method,
Heat treating the rolling roller having a surface smoothly polished; And
And discharging the pattern on the surface of the heat-treated rolling roller by using an electric discharge machine.
제1항에 있어서,
상기 방전가공하는 단계는, 방전가공을 마친 압연롤러의 표면에 표면처리 하는 단계를 더 포함하는 것을 특징으로 하는 압연롤러 가공방식.
The method according to claim 1,
Wherein the step of performing the electrical discharge machining further comprises the step of surface-treating the surface of the rolled roller after the electric discharge machining.
KR1020170116350A 2017-09-12 2017-09-12 Rolled roller processing method KR20190029149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020170116350A KR20190029149A (en) 2017-09-12 2017-09-12 Rolled roller processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020170116350A KR20190029149A (en) 2017-09-12 2017-09-12 Rolled roller processing method

Publications (1)

Publication Number Publication Date
KR20190029149A true KR20190029149A (en) 2019-03-20

Family

ID=66036370

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020170116350A KR20190029149A (en) 2017-09-12 2017-09-12 Rolled roller processing method

Country Status (1)

Country Link
KR (1) KR20190029149A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101457494B1 (en) 2013-12-23 2014-11-05 주식회사 포스코 Method for manufacturing a rolling roll

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101457494B1 (en) 2013-12-23 2014-11-05 주식회사 포스코 Method for manufacturing a rolling roll

Similar Documents

Publication Publication Date Title
Neves et al. Microstructural analyses and wear behavior of the cemented carbide tools after laser surface treatment and PVD coating
Kenda et al. Surface integrity in abrasive flow machining of hardened tool steel AISI D2
Haddad et al. Investigation of cylindrical wire electrical discharge turning (CWEDT) of AISI D3 tool steel based on statistical analysis
Choi et al. A comparison of the cooling effects of compressed cold air and coolant for cylindrical grinding with a CBN wheel
Das et al. Effect of machining parameters on surface roughness in machining of hardened AISI 4340 steel using coated carbide inserts
JP2006021319A (en) Cutting tool insert for metal machining, and manufacturing method thereof
Martell et al. Experimental investigation on variation of machined residual stresses by turning and grinding of hardened AISI 1053 steel
CN105543451A (en) Heat treatment method for inlaid backup roll sleeve
WO2007076207A2 (en) Controlled surface modification as an intermediate step in the surface texturing of work rolls
Fang et al. Surface integrity assessment of laser treated and subsequently coated cemented carbides
CN104674158B (en) Ternary co-permeation composite co-permeation treatment method for popo salt bath
Duc et al. Effectiveness of alumina nanofluid on slotting end milling performance of SKD 11 tool steel
KR20190029149A (en) Rolled roller processing method
Uhlmann et al. Ecological and functional optimization of the pretreatment process for plasma based coatings of cutting tools
US20070137038A1 (en) Work rolls having an engineered surface texture prepared by controlled surface modification after chrome coating
Azizi et al. Study of the machinability of hardened 100Cr6 bearing steel with tin coated ceramic inserts
CN107745231A (en) A kind of preparation method of high-precision titanium copper composite bar
RU2716329C1 (en) Method of hardening of hard-alloy tool
Stadnik et al. Investigation of diamond elastic belts characteristics effect on rotary belt grinding process output performance
KR20160094260A (en) Method of texturizing a sliding member and the sliding member
Neslusan et al. ANALYSIS OF SURFACE INTEGRITY AFTER HARD TURNING WITH WIPER INSERTS.
JPH10427A (en) Treatment method of inner surface of metal pipe
KR100349809B1 (en) Heat-processing method of metal materials
TW201350235A (en) Method for manufacturing internal gear
Salova et al. Efficiency of the continuous editing process grinding circles

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application