CN1484574A - 蜂窝挤压成形用模具 - Google Patents
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Abstract
蜂窝挤压成形用模具,它具有在表面上用单元块(3)设置槽状狭缝(2)并且在背面上设置与狭缝(2)连通的坯料导入孔的结构,各单元块(3),在形成于用单元块主体(10)设置的狭缝(2)及坯料导入孔的最外层表面上的硬质膜(14)上,形成软质膜(16)。根据这种蜂窝挤压成形用模具,在消除模具尺寸的精度不好的同时,不仅保持稳定的挤压摩擦力,挤压成形性能和耐磨损性能优异,而且,在挤压成形时,可以很容易地进行模具的调整。
Description
技术领域,
本发明涉及蜂窝状挤压成形用模具。
背景技术
在现有技术中,作为陶瓷蜂窝挤压成形用模具,具有在表面上用单元块设置槽形狭缝、在背面设置与狭缝连通的坯料导入孔的结构的蜂窝挤压成形用模具是公知的。
这种蜂窝挤压成形用模具,为了调整各单元块的狭缝的宽度,并且提高模具的耐久性,例如,进行表面处理,在单元块主体的表面上形成10~70μm的镍镀层(第一涂敷膜)之后,在镍镀层的表面上形成5~15μm的碳化钨层或者在镍镀膜中分散有SiC,金刚石,CBN等硬质粉末的复合镀层(第二涂敷膜)。
但是,在上述表面处理中形成碳化钨膜时,与镀敷比较,由于难以进行膜厚的调整,所以存在着对于要求涂敷膜(第一涂敷膜+第二涂敷膜)的目标尺寸在±2μm的模具,会引起尺寸偏差的问题。
上述碳化钨膜,W与C的比例容易发生变化,由于其比例的变化,与挤压出来的坯料的摩擦阻力会发生变化,所以,在形成的膜的摩擦阻力的分布差大的情况下,成形变得不稳定,成形物的形状也不稳定,成品率低。
此外,在上述表面处理中形成复合镀膜的情况下,硬质粒子在复合镀膜的表面上突出,因硬质粒子的密度不同会造与成挤压坯料的摩擦系数的变化,所以,在硬质粒子密度分布差大的情况下,成形不稳定,成形物的形状也不稳定,造成成品率下降。
进而,上述蜂窝挤压成形用模具,在挤压成形蜂窝之前,为了修正模具的尺寸偏差,根据需要,部分地进行坯料流动调整。
但是,在使用碳化物膜,钛系膜,复合镀膜时,由于是硬质的,所以,存在着模具的调整困难且需要很长的时间的问题。
本发明鉴于现有技术中存在的课题,其目的是,提供一种在消除模具的尺寸偏差的同时,不仅能够保持稳定的挤压摩擦力,优异的挤压成形性和耐磨损性,而且在挤压成形时,可以很容易地进行模具的调整的蜂窝挤压成形用模具。
发明的公开
根据本发明,提供一种蜂窝挤压成形模具,在具有于表面上用单元块设置槽状的狭缝的同时,在背面设置与狭缝连通的坯料导入孔结构的蜂窝挤压成形用模具中,其特征为,各单元块,在形成于用单元块主体设置的狭缝及坯料导入孔的最外层表面上的硬质膜上,形成软质膜。
这时,优选地,上述软质膜的维氏(Vickers)硬度为500~1500,膜的厚度为2~10μm。
进而,上述软质膜优选地为无电解镀镍膜。
其次,在本发明中,优选地,硬质膜是以从W,WC,W2C,W3C构成的组中选择出来的一种或两种以上的物质为成分的CVD膜,或是从TiC,TiN,TiCN构成的组中选择出来的一种或二种以上的物质为成分的CVD或PVD膜。
此外,在本发明中,硬质膜优选是将SiC,金刚石,CBN等硬质粉末分散在镍镀膜中的复合镀膜。
附图的简单说明
图1、是表示蜂窝挤压成形用模具的一个例子的简略正视图。
图2、是图1的A部分的放大正视图。
图3、是图1的A部分的放大剖面图。
实施发明的最佳形式
如前面所述,本发明的模具,在具有用单元块于表面上设置槽状的狭缝的同时,在背面设置与狭缝连通的坯料导入孔的结构的蜂窝挤压成形用模具中,各单元块,在形成于用单元块主体设置的狭缝及坯料导入孔的最外层表面上的硬质膜上,形成软质膜(例如,无电解镀镍膜)。
据此,本发明的模具,在消除模具的尺寸的不精确的同时,不仅保持稳定的挤压摩擦力、挤压成形性能及耐磨损性能优异,而且可以在挤压成形时,很容易进行模具的调整。
下面,基于附图对本发明的实施例进行详细说明。
图1~3是表示蜂窝挤压成形用模具的一个例子,图1是简略正视图,图2是图1的A部分的放大正视图,图3是图1的A部分的放大剖面图。
例如,本发明的模具,如图1~3所示,是一种具有在表面上用单元块3设置槽状狭缝2的同时,在背面上设置与狭缝2连通的坯料导入孔4的结构的蜂窝挤压成形模具1。
各单元块3,由形成在用单元块10主体设置的狭缝2及坯料导入孔的表面上的第一涂敷膜12,形成在第一涂敷膜12上、保护第一涂敷膜12的作为硬质膜的第二涂敷膜14,形成在第二涂敷膜14的表面上、作为软质膜的第三涂敷膜16构成。
这里,本发明的模具的主要特征在于,在保护第一涂敷膜12的作为硬质膜的第二涂敷膜14的表面上,形成作为软质膜的第三涂敷膜16。
据此,本发明的模具,即使在第二涂敷膜14的膜厚精度低的情况下,通过形成10μm以下的第三涂敷膜16,即使对于尺寸精度要求为±2μm的模具,也可以解决尺寸精度不够好的问题。
这是因为,与CVD膜和PVD膜相比,镀膜的成膜和膜厚控制等方面比较容易的缘故。
此外,本发明的模具,即使在第二涂敷膜14的状态容易变化的情况下,在作为模具最容易磨损的部分的缩径部6(参照图3),通过形成第三涂敷膜16,也可以确保稳定的挤压摩擦力,所以挤压成形性能和耐磨损性能优异。
此外,上述缩径部6,即使在第三涂敷膜磨损时,还可以被第二涂敷层保护,并且挤压成形性能受最后的出口部2的影响大,并且该部分不易磨损,所以,第三涂敷膜也难以减少,可以保持良好的成形性能。
进而,本发明的模具,通过在作为硬质膜的第二涂敷膜14的表面上形成作为软质膜的第三涂敷膜16,可以在短时间内很容易地调整各单元块10的狭缝宽度。
这时,本发明中用的全部涂敷膜(第1~3涂敷膜)的厚度a,没有特定的限制,但在考虑到基体金属模的加工难易程度时,优选地为20~120μm。
这时,本发明中用的第一涂敷膜是调整各单元块的狭缝宽度W用的衬底,通过形成在最外层表面上的硬质膜,不一定必须形成第一涂敷膜,但形成第一涂敷膜时,优选地为无电解镀镍膜,因为它具有适度的硬度,成膜比较容易,也容易控制膜厚。
此外,第一涂敷膜的厚度b,通常,优选地在0~100μm。
此外,本发明中用的第二涂敷膜,是保护作为衬底的第一涂敷膜的硬质膜,可以适当地选择①从W,WC,W2C,W3C构成的组中选择出来的一种或两种以上的物质为成分的CVD膜,②从TiC,TiN,TiCN构成的组中选择出来的一种或两种以上的物质为成分的CVD或PVD膜,③将SiC,金刚石,CBN等硬质粉末分散到镀镍膜中的复合镀膜中的任何一种膜。
并且,第二涂敷膜的厚度C优选地通常为1~70μm。
进而,本发明中用的第三涂敷膜,为在蜂窝挤压成形前高效率地修正模具的尺寸偏差,只要维氏硬度在500~1500左右,没有特定的限制,但优选地为无电解镀镍。
此外,第三涂敷膜的厚度d,优选地为2~10μm,可以较好地发挥本发明的效果。
下面,根据实施例对本发明进行更详细地说明,但本发明并不局限于这些实施例。
(实施例,比较例)
将作为不锈钢材料的C-450板材,用磨床加工成厚度20mm,每边长200mm的方形板。
此外,在方形板的一个端面侧,通过磨削加工,以0.9mm的间距将宽度150μm,深度3mm的狭缝,切槽加工成栅格状(参照图2~3)。
进而,从方形板的另一个端面侧,利用ECM(电化学加工)加工,以0.9mm的间距将直径D0.9mm,深度15mm的孔加工在狭缝的交叉部(一个跃变)(参照图2~3)。
在用上述方法获得的模具上分别施加表1所示的涂敷膜之后(参照图2~3),进行用堇青石组分构成的蜂窝结构体的挤压成形。
这时,调整模具尺寸偏差需要的挤压长度,和在蜂窝结构体的挤压成形时的挤压长度的结果,示于表1。
(表1)
实施例 | 比较例 | |
第一涂敷膜12 | Ni-P(无电解镀)28μm | Ni-P(无电解镀)30μm |
第二涂敷膜14 | W2C(CVD)10μm | W2C(CVD)10μm |
表面处理 | 35%HCl后,电镀>0.1μm | - |
第三涂敷膜16 | Ni-P(无电解镀)2μm | - |
调整模具尺寸偏差需要的挤压长度(m) | 100 | 500 |
在蜂窝结构体挤压成形时的挤压长度(m) | 3900 | 3500 |
(讨论)
从表的结果,实施例与比较例相比,可以在短时间内很容易地进行模具尺寸偏差的调整的同时,可以提高蜂窝结构体生产率。
此外,可以确认,在实施例中,与比较例相比,在消除模具尺寸精度不好的同时,可以保证稳定的挤压摩擦力,挤压成形性能及耐磨损性能优异。
工业上的可利用性
本发明的蜂窝挤压成形用模具,可以适合于陶瓷蜂窝的挤压成形。
特别是,本发明的蜂窝挤压成形用模具,在消除模具尺寸精度不好的同时,不仅保持稳定的挤压摩擦力,挤压成形性能和耐磨损性能优异,而且,在挤压成形时,可以很容易地进行模具的调整。
Claims (7)
1、一种蜂窝挤压成形用模具,具有于表面上用单元块设置槽状的狭缝并且在背面设置与狭缝连通的坯料导入孔的结构,其特征为,各单元块,在形成于由单元块主体设置的狭缝及坯料导入孔的最外层表面上的硬质膜上,形成软质膜。
2、如权利要求1所述的蜂窝挤压成形用模具,其特征为,上述软质膜的维氏硬度为500~1500。
3、如权利要求1或2所述的蜂窝挤压成形用模具,其特征为,上述软质膜的厚度为2~10μm。
4、如权利要求1至3中任何一个所述的蜂窝挤压成形用模具,其特征为,软质膜是无电解镀镍膜。
5、如权利要求1至4中任何一个所述的蜂窝挤压成形用模具,其特征为,硬质膜是以从W,WC,W2C,W3C构成的组中选择出来的一种或两种以上的物质为成分的CVD膜。
6、如权利要求1至4中任何一个所述的蜂窝挤压成形用模具,其特征为,硬质膜是以从TiC,TiN,TiCN构成的组中选择出来的一种或两种以上的物质为成分的CVD或PVD膜。
7、如权利要求1至4中任何一个所述的蜂窝挤压成形用模具,其特征为,硬质膜是将SiC,金刚石,CBN等硬质粉末分散到镍镀膜中的复合镀膜。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP338823/01 | 2001-11-05 | ||
JP338823/2001 | 2001-11-05 | ||
JP2001338823A JP2003136516A (ja) | 2001-11-05 | 2001-11-05 | ハニカム押出成形用口金 |
Publications (2)
Publication Number | Publication Date |
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CN1484574A true CN1484574A (zh) | 2004-03-24 |
CN1232385C CN1232385C (zh) | 2005-12-21 |
Family
ID=19153256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB028035003A Expired - Fee Related CN1232385C (zh) | 2001-11-05 | 2002-10-07 | 蜂窝挤压成形用模具 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7094047B2 (zh) |
EP (1) | EP1442859B1 (zh) |
JP (1) | JP2003136516A (zh) |
CN (1) | CN1232385C (zh) |
DE (1) | DE60234626D1 (zh) |
WO (1) | WO2003039826A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101780711A (zh) * | 2010-02-23 | 2010-07-21 | 大连塑料研究所有限公司 | 连续直接挤出成型蜂窝板制品的设备 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4134616B2 (ja) | 2001-10-02 | 2008-08-20 | 日立金属株式会社 | プレス装置および磁石の製造方法 |
DE102007027668A1 (de) * | 2007-06-15 | 2008-12-18 | Robert Bosch Gmbh | Extrusionsmundstück zur Herstellung keramischer Wabenkörper |
US20090110833A1 (en) * | 2007-10-31 | 2009-04-30 | Gala Industries, Inc. | Method for abrasion-resistant non-stick surface treatments for pelletization and drying process equipment components |
JP5360051B2 (ja) * | 2008-03-28 | 2013-12-04 | 日立金属株式会社 | セラミックハニカム構造体成形用金型 |
WO2013145209A1 (ja) * | 2012-03-29 | 2013-10-03 | イビデン株式会社 | 押出成形用金型、押出成形用金型の製造方法、押出成形装置及びハニカム構造体の製造方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63176107A (ja) * | 1987-01-19 | 1988-07-20 | 日本碍子株式会社 | セラミツクハニカム押出用ダイス |
US4861626A (en) * | 1979-04-21 | 1989-08-29 | Ngk Insulators, Ltd. | Extrusion die, method of producing the same and method of reclaiming the same |
JPS55140514A (en) * | 1979-04-21 | 1980-11-04 | Ngk Insulators Ltd | Preparation of mouth piece for extruding and molding honeycomb molding earth discharging foundation |
US4574459A (en) * | 1983-12-23 | 1986-03-11 | Corning Glass Works | Extrusion die manufacture |
JPH0645130B2 (ja) * | 1989-03-23 | 1994-06-15 | 日本碍子株式会社 | セラミックハニカム押出ダイスの製造法 |
JP2693716B2 (ja) * | 1994-03-25 | 1997-12-24 | 日本碍子株式会社 | セラミックハニカム押出成形用口金の再生方法 |
JPH09300326A (ja) * | 1996-05-16 | 1997-11-25 | Denso Corp | ハニカム成形用ダイス及びその製造方法 |
US6193497B1 (en) * | 1997-03-10 | 2001-02-27 | Ngk Insulators, Ltd. | Honeycomb extrusion die |
JP4359979B2 (ja) * | 1999-12-16 | 2009-11-11 | 住友電気工業株式会社 | 被覆摺動部材 |
-
2001
- 2001-11-05 JP JP2001338823A patent/JP2003136516A/ja active Pending
-
2002
- 2002-10-07 WO PCT/JP2002/010400 patent/WO2003039826A1/ja active Application Filing
- 2002-10-07 DE DE60234626T patent/DE60234626D1/de not_active Expired - Lifetime
- 2002-10-07 EP EP02772977A patent/EP1442859B1/en not_active Expired - Lifetime
- 2002-10-07 CN CNB028035003A patent/CN1232385C/zh not_active Expired - Fee Related
- 2002-10-07 US US10/451,600 patent/US7094047B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101780711A (zh) * | 2010-02-23 | 2010-07-21 | 大连塑料研究所有限公司 | 连续直接挤出成型蜂窝板制品的设备 |
CN101780711B (zh) * | 2010-02-23 | 2013-08-28 | 大连塑料研究所有限公司 | 连续直接挤出成型蜂窝板制品的设备 |
Also Published As
Publication number | Publication date |
---|---|
WO2003039826A1 (fr) | 2003-05-15 |
US20040052890A1 (en) | 2004-03-18 |
US7094047B2 (en) | 2006-08-22 |
EP1442859B1 (en) | 2009-12-02 |
JP2003136516A (ja) | 2003-05-14 |
EP1442859A1 (en) | 2004-08-04 |
DE60234626D1 (de) | 2010-01-14 |
CN1232385C (zh) | 2005-12-21 |
EP1442859A4 (en) | 2007-03-21 |
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