WO2016027288A1 - Procédé de poinçonnage d'une tôle d'acier plaquée à base de zn - Google Patents

Procédé de poinçonnage d'une tôle d'acier plaquée à base de zn Download PDF

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Publication number
WO2016027288A1
WO2016027288A1 PCT/JP2014/004233 JP2014004233W WO2016027288A1 WO 2016027288 A1 WO2016027288 A1 WO 2016027288A1 JP 2014004233 W JP2014004233 W JP 2014004233W WO 2016027288 A1 WO2016027288 A1 WO 2016027288A1
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WO
WIPO (PCT)
Prior art keywords
punching
steel sheet
plated steel
based plated
quick
Prior art date
Application number
PCT/JP2014/004233
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English (en)
Japanese (ja)
Inventor
教昌 三浦
黒部　淳
Original Assignee
日新製鋼株式会社
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 日新製鋼株式会社 filed Critical 日新製鋼株式会社
Priority to JP2016526966A priority Critical patent/JPWO2016027288A1/ja
Priority to PCT/JP2014/004233 priority patent/WO2016027288A1/fr
Publication of WO2016027288A1 publication Critical patent/WO2016027288A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts

Definitions

  • the present invention relates to a method for suppressing a decrease in corrosion resistance of a punched end face that occurs when a Zn-based plated steel sheet coated with a plated metal containing Zn (zinc) is cut by punching.
  • a Zn-based plated steel sheet in which the surface of the steel sheet is coated with Zn or a Zn alloy is used.
  • parts are manufactured by plastic working the steel sheet.
  • a steel plate obtained by plating Zn or an alloy containing Zn on the surface of the steel plate is referred to as a Zn-based plated steel plate.
  • Patent Document 2 in a Zn-based plated steel sheet with a thickness of 2 mm or less, a die having a radius of curvature at the shoulder of either a punch or a die is used, and the shear plane ratio at the end face after cutting Has been proposed in which the zinc coverage of the shear plane is 50% or more.
  • Patent Document 3 proposes a method of covering the punched end face with a covering member made of Al, Zn-based plated steel sheet or the like.
  • an object of the present invention is to provide a method for effectively suppressing the occurrence of red rust on the cut end face while suppressing an increase in cost with respect to a method for cutting a Zn-based plated steel sheet.
  • the quick-drying oil 6 is applied to the planned punching portion 4 on the surface of the Zn-based plated steel sheet 1 before punching. At the same time, the quick-drying oil 6 is punched so as to go around the punched end face 5. As another method, in addition to the above-described method, the quick-drying oil 6 is further applied to the punched end face 5 after the punching process.
  • the “quick drying oil” is an industrial lubricating oil composed of a base oil (light base oil) such as a light mineral oil and / or a synthetic light oil and a necessary additive such as an oily agent.
  • working oils it refers to oils that are excellent in punching workability, have good drying properties and are non-defatted, and have a colorless or light-colored and transparent liquid. Among these, volatilization starts after coating, but it is preferable that a small amount of lubricating components remain on the surface of the Zn-based plated steel sheet 1 even after several days when left horizontally in an environment at room temperature of 25 ° C. after coating. .
  • the quick-drying oil is applied to the punched portion of the Zn-based plated steel sheet surface before the punching process, and the quick-drying oil wraps around the punching end surface during the punching process.
  • the quick-drying oil wraps around the punching end surface during the punching process.
  • a surface treatment agent such as a rust preventive paint is applied to the punched end face, or similar to the plated metal of the Zn-based plated steel sheet.
  • repair coating is performed in which the component paint is applied to the punched end face.
  • these surface treatment agents and paints for repair coating may differ in color from the plated metal, they can be used for products that require the punched end face color to be the same as that of the Zn-based plated steel sheet. Can not.
  • the quick-drying oil is transparent, it is possible to suppress a decrease in the corrosion resistance of the punched end face without causing deterioration of the appearance.
  • FIG. 1A and 1B are diagrams showing an embodiment of a punching method according to the present invention.
  • FIG. 1A shows an outline of the punching process
  • FIG. 1B shows a state after the punching process.
  • the Zn-based plated steel sheet 1 that is the subject of the present invention is not limited to a single plating layer provided on the surface of the steel sheet, but an alloy of Zn and Al, an alloy of Zn and Ni, Zn and Al, and It includes the whole of an alloy of Mg and an alloy containing Zn such as an alloy of Zn, Al, Mg and Si coated as a plating metal.
  • the steel plate to be coated with the plated metal may be either a hot-rolled steel plate or a cold-rolled steel plate, and the steel type may be any of an extremely low carbon steel plate, a low carbon steel plate, etc., and is not particularly limited.
  • the amount of plating adhesion of the Zn-based plated steel sheet 1 is not particularly limited, in order to improve the sacrificial anticorrosion function of the punched end face 5, it is better to increase the amount of plating adhesion, and the amount of adhesion depends on the usage environment of the parts. Can be determined by.
  • the thickness of the Zn-based plated steel sheet 1 is not particularly limited, but the sacrificial anticorrosive function exerted on the plated end face 5 of the plated metal is more effective as the sheet thickness is thinner. .
  • the first embodiment applies the quick-drying oil 6 to the surface of the Zn-based plated steel sheet 1 at the planned punching site 4 where the punching process is performed before the punching process. Thereafter, punching is performed so that the quick-drying oil 6 goes around the punching end surface 5. Thereby, since the quick-drying oil 6 goes around to the punching end surface 5 at the time of the punching process, it is possible to suppress the deterioration of the corrosion resistance of the end surface 5.
  • the quick-drying oil 6 wraps around the entire punched end surface 5, but when the plate thickness increases, the quick-drying oil 6 covers the entire punched end surface 5. Is difficult to go around. Therefore, as a second embodiment of the present invention, the quick-drying oil 6 is applied to the surface of the Zn-based plated steel sheet 1 at the planned punching site 4 where the punching process is performed before the punching process, and after the punching process, the punched end face 5 is applied. The quick-drying oil 6 is applied to the skin. Thereby, the quick-drying oil 6 exists in the whole area of the punching end face 5, and even if it is the Zn-type plated steel plate 1 with a thick board thickness, the corrosion-resistant fall of the punching end face 5 can be suppressed.
  • the quick-drying oil 6 is also applied to the punched end face 5 after the punching process.
  • the thickness of the Zn-based plated steel sheet 1 is the effect of the sacrificial anticorrosive action of the Zn-based plated steel sheet 1 on the stamped end face 5. Although it does not specifically limit since it changes with kinds, you may consider that it is about 1 mm or more. Further, the type of the quick drying oil 6 may be selected in consideration of workability, influence on the work environment, and the like, and is not particularly limited.
  • Zn-based plated steel sheet 1 As the Zn-based plated steel sheet 1, there were prepared Zn-6% Al-3% Mg plated steel sheets having a single-side plating adhesion amount of 90 g / m 2 and thicknesses of 0.5 mm and 3.2 mm. And the parts of the punched end face 5 were compared by applying the quick-drying oil 6 and punching them to produce parts.
  • punches having different outer diameters according to the plate thickness of the Zn-based plated steel sheet 1 were used. Specifically, when the thickness of the Zn-based plated steel sheet 1 is 0.5 mm, a punch having an outer diameter of 10.3 mm is used, and when the thickness of the Zn-based plated steel sheet 1 is 3.2 mm, A punch with a diameter of 9.76 mm was used. The die 3 was a die having an inner diameter of 10.4 mm for both plate thicknesses. Thus, the punching clearance is 10% for both plate thicknesses. The shoulders of the punch 2 and the die 3 were given a radius of curvature R of 0.5 mm.
  • the quick-drying oil 6 a substantially transparent working oil having a kinematic viscosity of 3 mm 2 / s, specifically, a punching working oil G-6376FU manufactured by Nippon Tool Oil Co., Ltd. was used.
  • the quick-drying oil 6 was applied by brushing to the planned punching portion 4 where the punching process was performed.
  • the quick-drying oil 6 was applied to the punching end face 5 by brushing.
  • the application conditions of the quick-drying oil 6 were as follows. A) The punching process is performed without applying the quick-drying oil 6 to the planned punching point 4 and the punching end face 5 is not coated with the quick-drying oil 6 B) The punching process is performed. The quick-drying oil 6 is applied to the planned punching place 4 to be punched, and the quick-drying oil 6 is not applied to the punched end face 5 after the punching process. C) In the planned punching place 4 to be punched The quick-drying oil 6 is applied to perform punching, and the quick-drying oil 6 is also applied to the punched end face 5 after the punching process.
  • Figure 2 shows the occurrence of red rust under each of the above conditions.
  • red rust occurred on any punched end face 5 having a thickness of 0.5 mm or 3.2 mm.
  • red rust was not generated in the component having a thickness of 0.5 mm, but red rust was observed in the component having a thickness of 3.2 mm.
  • occurrence of red rust could be prevented in both a component having a thickness of 0.5 mm and a component having a thickness of 3.2 mm.
  • the punching method according to the present invention is suitable for suppressing a decrease in corrosion resistance of a punched end face of a part manufactured by punching using a Zn-based plated steel sheet as a raw material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Coating With Molten Metal (AREA)

Abstract

La présente invention concerne un procédé de poinçonnage d'une tôle d'acier plaquée à base de Zn, qui supprime une diminution de la résistance à la corrosion dans une surface d'extrémité poinçonnée d'un produit poinçonné. La présente invention se caractérise de la manière suivante : lors du poinçonnage d'une tôle d'acier plaquée à base de Zn (1), une huile à séchage rapide (6) est appliquée sur une partie à poinçonner (4) dans la surface de la tôle d'acier plaquée à base de Zn (1) avant le poinçonnage ; et l'huile à séchage rapide (6) est appliquée sur une surface d'extrémité de poinçonnage (5) après le poinçonnage, en plus de l'application de l'huile à séchage rapide (6) sur la partie à poinçonner (4) dans la surface de la tôle d'acier plaquée à base de Zn (1) avant le poinçonnage.
PCT/JP2014/004233 2014-08-19 2014-08-19 Procédé de poinçonnage d'une tôle d'acier plaquée à base de zn WO2016027288A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016526966A JPWO2016027288A1 (ja) 2014-08-19 2014-08-19 Ｚｎ系めっき鋼板の打抜き方法
PCT/JP2014/004233 WO2016027288A1 (fr) 2014-08-19 2014-08-19 Procédé de poinçonnage d'une tôle d'acier plaquée à base de zn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/004233 WO2016027288A1 (fr) 2014-08-19 2014-08-19 Procédé de poinçonnage d'une tôle d'acier plaquée à base de zn

Publications (1)

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WO2016027288A1 true WO2016027288A1 (fr) 2016-02-25

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WO (1) WO2016027288A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020183882A1 (fr) 2019-03-12 2020-09-17 日本製鉄株式会社 Procédé de coupe et article coupé

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000094059A (ja) * 1998-09-22 2000-04-04 Amada Co Ltd 打ち抜き加工方法およびその装置
JP2002035861A (ja) * 2000-07-24 2002-02-05 Nishiyama Tetsumou Seisakusho:Kk 金属製網材
JP2003145222A (ja) * 2001-11-14 2003-05-20 Kobe Steel Ltd アルミニウム合金板のプレス加工方法およびアルミニウム合金板
JP2006315052A (ja) * 2005-05-13 2006-11-24 Jpf Techno Service Kk 金属板製物品の製造方法及び製造設備
WO2006137572A1 (fr) * 2005-06-21 2006-12-28 Toyota Jidosha Kabushiki Kaisha Séparateur, processus de production de séparateur, et appareil de production correspondant
JP2008195765A (ja) * 2007-02-09 2008-08-28 Toyota Boshoku Corp 金属材料プレス加工用の潤滑油とそれを用いた金属材料のプレス加工方法
JP2012101258A (ja) * 2010-11-11 2012-05-31 Nisshin Steel Co Ltd 塗装鋼板のせん断加工方法
JP2013035055A (ja) * 2011-08-10 2013-02-21 Toyota Motor Corp プレス加工装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5517605U (fr) * 1978-07-12 1980-02-04
JP5202848B2 (ja) * 2007-01-12 2013-06-05 トヨタ紡織株式会社 金属材料加工用の潤滑油とそれを用いた金属材料の加工方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000094059A (ja) * 1998-09-22 2000-04-04 Amada Co Ltd 打ち抜き加工方法およびその装置
JP2002035861A (ja) * 2000-07-24 2002-02-05 Nishiyama Tetsumou Seisakusho:Kk 金属製網材
JP2003145222A (ja) * 2001-11-14 2003-05-20 Kobe Steel Ltd アルミニウム合金板のプレス加工方法およびアルミニウム合金板
JP2006315052A (ja) * 2005-05-13 2006-11-24 Jpf Techno Service Kk 金属板製物品の製造方法及び製造設備
WO2006137572A1 (fr) * 2005-06-21 2006-12-28 Toyota Jidosha Kabushiki Kaisha Séparateur, processus de production de séparateur, et appareil de production correspondant
JP2008195765A (ja) * 2007-02-09 2008-08-28 Toyota Boshoku Corp 金属材料プレス加工用の潤滑油とそれを用いた金属材料のプレス加工方法
JP2012101258A (ja) * 2010-11-11 2012-05-31 Nisshin Steel Co Ltd 塗装鋼板のせん断加工方法
JP2013035055A (ja) * 2011-08-10 2013-02-21 Toyota Motor Corp プレス加工装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020183882A1 (fr) 2019-03-12 2020-09-17 日本製鉄株式会社 Procédé de coupe et article coupé
KR20210135568A (ko) 2019-03-12 2021-11-15 닛폰세이테츠 가부시키가이샤 절단 방법 및 절단 가공품

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