CN1894468A - 刀刃提供工具和生产该工具的方法 - Google Patents
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Abstract
本发明涉及一种提供刀刃的工具,例如刮刀刀片,在纸浆生产和/或纸张生产工艺的不同阶段中被用作刮擦工具。其包括一提供刀刃的钢条,其刀刃部分具有由激光技术施加的抗磨损的涂料层,因此在所述的涂料和该钢条之间出现一冶金粘合物层,因此就能获得超过850HV硬度水平的表面硬度。因此,就能获得具有很长使用寿命的抗磨损刮刀刀片。
Description
背景技术
刮板或者是除污刮刀被称做“刮刀刀片”为不同的目的被广泛应用在纸和纸浆工业领域,但是在很多情况下,它们的功能是清洁或是刮去旋转辊表面的材料或废料。这类刮刀刀片具有,例如,从硬挺的干燥滚筒上通过刮擦滚筒的表面来除去纸幅的用途。
纸浆中包含的填料如二氧化硅、大量的细小颗粒和纸纤维都磨损着刮刀刀片,这种磨损基本上延着刀片刀刃均匀分布,并且这种磨损的速率大于刀片被腐蚀的速率。而且,刮刀刀片被看作是只有相当短使用寿命的消耗类商品,通常认为小于一天。很多情况下,在用过大约5个小时后就已经被更换了。通常用了的刮刀刀片不再被研磨而是使用完后被丢弃。
在纸厂中有不同的原则来使用刮刀刀片,在被磨损使用的初始状态时对刀刃的成型通常是同样的。当同样的刀刃被成型时,磨损是相对均匀的。适当的“在状态中”的研磨被假定为对造纸具有相当的影响。如果刮刀刀片被用在造纸工艺过程的后面阶段时,它就会影响纸张质量以及纸张的表面结构,因此它被看作非常重要的参数。刮刀刀片可以有不同的长度和介于1到10米的长度变化。
这样,由于刮刀刀片受制于广泛的磨损的情况,就有不同的技术用来延长其使用寿命,如附加抗磨损的材料到刀片与滚筒相接触的部分上。这类加强刀片的尖部和刀刃表面的例子,如目前实际使用的用硬的陶瓷涂料来降低刀片的磨损的解决方案。这类陶瓷涂料通常用在以淬火和退火的碳钢制成的刮刀刀片上,并可用热喷涂技术如等离子喷涂或等离子沉积技术。
提供这类抗磨损涂布技术到去污或刮板刮刀的特型刮刀刀片(英语为“刮刀刀片”)上的例子,在GB-A-978988、GB-A-1289609和GB-A-2130924中都能找到。整个公知的技术就是着重在于提供一种抗磨损的涂料到刀片的与旋转滚筒相接触的部分上。
按照现有技术,为了改善提供刀刃工具的性质、使用寿命从而影响纸张的质量,尤其是在HVOF(高速度氧化燃料)下进行热(温)喷涂。该方法烧结附加材料并且在大约1000℃下进行所谓的分散粘结。这种涂布方法的问题是造成裂纹、细孔、很差的粘结强度、粘附力等。目前喷涂的材料是陶瓷,如AL2O3。
发明内容
在上述背景情况下,本发明的目的是能够提供一种刀刃提供工具(edge-provided tool),如刮刀刀片,该工具具有比现有已知工具更好的黏着性的涂层。同时,该工具的变形性提高换句话说变形性能被变得最小,同时,所需要的精细度需求以及在加工完成的纸产品上的刮痕能尽可能没有。而且,因表面处理而在基础材料上能量的供应或热量的影响能尽可能地减小。
本发明的另一个目的是生产一种刮板和/或基本刮刀刀片型的清洁刀片,其具有很长的使用寿命,并且在纸张生产过程中使得纸张具有光滑和良好的表面,没有刮痕和其它缺陷。
这些和其他目的都能由所附的独立权利要求的特征界定而提供的工具来意外地获得。本发明的优选实施例由从属权利要求的描述来提供。
附图说明
下面将参照所附的示意图详细解释本发明,其中:
图1显示了直接与滚筒相连用来刮去纸张生产中的纸浆的刮刀刀片的透视图;
图2显示了按照本发明的已被处理过-刀刃的刮刀刀片的解释性示意图;
图3显示了从内看,按照本发明的被涂布过的刮刀刀片刀刃的解释性示意图;
图4显示了从内看,按照本发明的被激光浸渍的刮刀刀片刀刃的解释性示意图;
图5显示了按照本发明的激光喷涂的刮刀刀片的解释性示意图。
具体实施方式
这样,本发明涉及一种提供刀刃的工具以及制造该工具的方法。更进一步来说,本发明涉及一种被称为“刮刀刀片”的工具类型以及擦、刮刀和/或清洁工具用在例如造纸上,以获得光滑和良好的纸产品而没有刮痕和其它缺陷。还有那些通常被称作涂布机刮刀和通常的刀子都被包含在本发明中。但是,为了便于描述本发明,本发明的主题在下面被定名为“刮刀刀片”,该定名概念也包含其他被命名的情况。
因此,图1所示的一刮刀刀片1,其邻接抵靠一辊2,并且,例如,其从该辊上去除纸浆。按照本发明通过激光技术涂布,能够很好地进行工作以便在材料的刀刃部分涂布,优选的材料是选择钢的等级其硬度至少为450HV的材料。这类钢的例子可以是碳钢,其成分(以重量百分计%)包括0.8-1.2%的C,优选是约1%的C,0.20-0.35%的Si,0.35-0.50%的Mn,最多0.02%的P,最多0.01%的S,和作为平衡量的Fe以及在周期系统里一些其它辅助元素含量低于0.5%。
图2和图3所示的是钢条3,其刀刃上已经按照本发明用激光技术被涂布了涂料4。因此,其抗磨损性被显著增大。该涂料包括,例如,氧化铝或钨铬钴合金(stellite)(如钨铬钴合金12)。该激光技术是,本质上,是本领域技术人员公知的技术并在图5中已经显示了。在激光涂布中,可获得本发明的附着到钢性基底上的原子的(也被称为“金相的”)粘合物,如图3所示。
图4示出了一刮刀刀片的横截面,其已经被涂布,例如按照本发明被涂布了TiC。该激光浸渍技术在专利WO99056906中描述了。该钢条被标注为5而该激光技术浸渍的部分标注为6。通过该图还可看出,颗粒/碳化物已经渗透入钢基底内,因此在二者之间的显著区别区域已经被消除。涂料已经有效果了,如在氧化铝或钨铬钴合金的情况下,如图2和3所示,同时在适宜的碳化物和/或氮化物下也实现了浸渍。
按照图5,条形刮刀刀升多。热是通过一激光枪8提供的,在基底上就提供了一涂料层9。所供应的粉状材料7适宜为包括有耐火材料,如二氧化铝。可选择的是,可用钨铬钴合金材料。与已经施加到刮刀刀片上的涂层9相连的,很重要的一点是,该材料很经受快速的冷却,因此就能获得所需的良好结构,其既具备很好的刚度也具有很好的硬度,更接近于相当850-1300HV的硬度。这样,同时在该表面层就在所需的低摩擦的情况下获得高承压强度,并能获得所需的抗腐蚀性。
如前面所提到的,该涂层实质上包含二氧化铝或钨铬钴合金。但是,该涂层也可包括或是由其他耐火材料,如金属氧化物、金属硅酸盐、金属碳化物、金属硼化物、金属氮化物及它们的混合物等组成。特别是,优选的陶瓷材料可以从二氧化铝、氧化铬、氧化锆、碳化钨、碳化铬、一碳化锆、碳化钽、碳化钛、一氮化钛、碳化铌、硼化物等中选择。
如上面所描述的,激光浸渍也可以由碳化物和氮化物,如TiC、NbC和TiN在激光处理过程中加入到基础材料的表面上来进行。颗粒可以在高气压下同时在激光光束熔融在材料的表面层中时被喷射,这样抗磨损的颗粒就能穿透进入到基底内。而且,激光涂层就能影响到大量的圆钢(rounds),因此就能获得多个层。该钢条就能获得一相当抗磨损的表面。
钢条的厚度是造纸工业中的刮刀刀片中的通常的一个厚度,并且可以在0.2和3mm之间变化,适宜的是在0.305和1.27mm之间变化。涂层的厚度或者该浸渍层可适宜在钢条厚度的5%和15%之间。
Claims (12)
1、一种刮刀(doctor)或是涂布刀片,特别是用于纸浆生产和/或生产工艺中纸的不同处理阶段的刮器、刮板和/或清洁工具,由提供刀刃的钢条构成,该刀刃部分具有一抗磨损涂层,其特征在于,该刀片的该刀刃部分是通过激光技术被涂布了一表面加强涂层,因此在所述的抗磨损涂层和该钢条之间就出现一冶金粘和物,并且该刀刃部分具有超过1000HV的硬度。
2、如权利要求1所述的刮刀或涂布刀片,其特征在于,所述抗磨损涂层表面的硬度至少为850HV的硬度水平。
3、如权利要求1所述的刮刀或涂布刀片,其特征在于,所述的刀片的刀刃部分具有通过激光涂布施加的表面层,该层厚度为刀片厚度的5-15%。
4、如权利要求1所述的刮刀或涂布刀片,其特征在于,该刀片的刀刃部分具有通过激光涂布或是激光浸渍施加的加强表面层部分,该部分的厚度为刀片厚度的5-15%。
5、如前述任一权利要求所述的刮刀或涂布刀片,其特征在于,该钢是一种碳钢,其化学成分以重量百分%计为:含0.8-1.2%的C,优选为约1%的C,0.20-0.35的Si,0.35-0.50%的Mn,最多0.02%的P,最多0.01%的S,和作为平衡量的Fe以及在周期系里一些其它辅助元素含量低于0.5%。
6、一种生产如权利要求1-5中任一所述的刮刀或涂布刀片的方法,其特征在于,由钢生产的材料首先被碾平,然后在具有刀刃的部分上进行刀刃处理,该刀刃部分形成在沿刀刃边中的一个上,然后在所述刀刃部分通过激光技术提供一表面加强层,使在所述层和下层的钢基底之间升起形成一冶金粘合物,并且该刀刃处理是以下述方式进行的,即该钢基底在粉末被供应期间被激光处理,所供应的热量使得所述的粉末与钢基底熔融,同时形成形成一原子的/冶金粘合物部分。
7、一种生产如权利要求1-5中任一所述的刮刀或涂布刀片的方法,其特征在于,由钢生产的材料首先被碾平,然后在具有刀刃的部分上进行刀刃处理,该刀刃部分形成在沿刀刃边中的一个上,然后在所述刀刃部分通过激光技术提供一表面加强层,使在所述层和下层的钢基底之间升起形成一冶金粘合物,并且该刀刃处理是以下述方式进行的,即该钢基底被激光浸渍和复原,陶瓷材料的颗粒材料就通过激光穿透浸入到熔融的表面内,因此升起形成一原子的/冶金粘合物部分。
8、一种如权利要求6或7所述的方法,其特征在于,被提供的粉末主要包括氧化铝。
9、一种如权利要求6或7所述的方法,其特征在于,被提供的材料主要包括钨铬钴合金。
10、一种如权利要求6或7所述的方法,其特征在于,该浸渍物以碳化物和氮化物如TiC、NbC和/或TiN的方式被执行,被供应到钢的基底上。
11、一种如权利要求6-10任一所述的方法,其特征在于,钢的化学成分以重量百分%计为:含0.8-1.2%的C,优选为约1%的C,0.20-0.35的Si,0.35-0.50%的Mn,最多0.02%的P,最多0.01%的S,和作为平衡量的Fe以及在周期系里一些其它辅助元素含量低于0.5%。
12、一种如权利要求6-11任一所述的方法,其特征在于,该抗磨损涂层具有超过850HV的表面硬度的水平。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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SE03035169 | 2003-12-19 | ||
SE0303516A SE526191C2 (sv) | 2003-12-19 | 2003-12-19 | Eggförsett verktyg och metod för framställning därav |
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CN1894468A true CN1894468A (zh) | 2007-01-10 |
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CNA2004800378838A Pending CN1894468A (zh) | 2003-12-19 | 2004-12-10 | 刀刃提供工具和生产该工具的方法 |
Country Status (8)
Country | Link |
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US (1) | US20070158045A1 (zh) |
EP (1) | EP1694912A1 (zh) |
JP (1) | JP2007521421A (zh) |
KR (1) | KR20060123304A (zh) |
CN (1) | CN1894468A (zh) |
CA (1) | CA2550107A1 (zh) |
SE (1) | SE526191C2 (zh) |
WO (1) | WO2005059246A1 (zh) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
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US7431801B2 (en) * | 2005-01-27 | 2008-10-07 | The Procter & Gamble Company | Creping blade |
DE102005062911B4 (de) * | 2005-12-29 | 2007-10-25 | Böhler-Uddeholm Precision Strip GmbH & Co. KG | Komposit-Rakelklinge mit pulvermetallurgisch hergestellter Arbeitskante |
EP1878565A1 (en) * | 2006-07-13 | 2008-01-16 | BTG Eclépens S.A. | Creping blade |
US7691236B2 (en) * | 2006-07-26 | 2010-04-06 | The Procter + Gamble Company | Creping blade with a highly smooth bevel surface |
WO2009100344A2 (en) * | 2008-02-08 | 2009-08-13 | Kadant Web Systems, Inc. | Thermally adaptive surfaces for receiving thermal sprays |
DE102009029699A1 (de) * | 2009-09-23 | 2011-03-24 | Voith Patent Gmbh | Klingenbeschichtung |
AT508771B1 (de) * | 2009-11-05 | 2011-04-15 | Busatis Gmbh | Messer zur tangentialen entfernung einer oberfläche eines werkstücks |
SE535064C2 (sv) * | 2010-08-23 | 2012-04-03 | Sandvik Intellectual Property | Kallvalsad och härdad bandstålsprodukt |
DE102010062901A1 (de) * | 2010-12-13 | 2012-06-14 | Voith Patent Gmbh | Imprägnierte Klingenbeschichtung |
US20140000467A1 (en) * | 2011-03-18 | 2014-01-02 | Allan Lunnerfjord | Blade shaped tool and method for its manufacturing |
CN104294268B (zh) * | 2014-09-06 | 2016-10-26 | 北京工业大学 | 一种耐磨导辊制备方法 |
EP3225736A1 (en) | 2016-03-31 | 2017-10-04 | BTG Eclépens S.A. | Masked coating blade |
CN106001559A (zh) * | 2016-05-13 | 2016-10-12 | 武汉苏泊尔炊具有限公司 | 刀具及其制备方法 |
CN109594074A (zh) * | 2019-01-30 | 2019-04-09 | 沈阳大陆激光工程技术有限公司 | 一种用于激光制造的无磁耐磨材料 |
Family Cites Families (7)
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FR2509640A1 (fr) * | 1981-07-17 | 1983-01-21 | Creusot Loire | Procede de fabrication d'une piece metallique composite et produits obtenus |
EP0542729B1 (en) * | 1986-10-17 | 1996-05-22 | Board Of Regents, The University Of Texas System | Method and apparatus for producing parts by selective sintering |
DE4139105C2 (de) * | 1991-11-28 | 1994-03-24 | Cerasiv Gmbh | Verwendung einer PSZ-Keramik mit Zusatz von Spinell als Verschleißbauteil |
FR2698885A1 (fr) * | 1992-12-04 | 1994-06-10 | Inst Nat Polytech Grenoble | Procédé de traitement de surface de substrats métalliques et revêtements durs ainsi obtenus. |
FR2750907B1 (fr) * | 1996-07-12 | 1998-09-18 | Technogenia | Couteau d'ecorcage, et procede pour sa realisation |
DE19931948B4 (de) * | 1999-07-09 | 2004-11-11 | Zwilling J. A. Henckels Ag | Verfahren zur Herstellung einer Klinge eines Schneidwerkzeuges und damit hergestelltes Erzeugnis |
US6423427B1 (en) * | 2000-10-26 | 2002-07-23 | Kadant Web Systems, Inc. | Composite doctor blade and its method of manufacture |
-
2003
- 2003-12-19 SE SE0303516A patent/SE526191C2/sv not_active IP Right Cessation
-
2004
- 2004-12-10 KR KR1020067011464A patent/KR20060123304A/ko not_active Application Discontinuation
- 2004-12-10 EP EP04820548A patent/EP1694912A1/en not_active Withdrawn
- 2004-12-10 CN CNA2004800378838A patent/CN1894468A/zh active Pending
- 2004-12-10 WO PCT/SE2004/001839 patent/WO2005059246A1/en not_active Application Discontinuation
- 2004-12-10 CA CA002550107A patent/CA2550107A1/en not_active Abandoned
- 2004-12-10 JP JP2006545281A patent/JP2007521421A/ja not_active Abandoned
- 2004-12-10 US US10/583,207 patent/US20070158045A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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JP2007521421A (ja) | 2007-08-02 |
SE526191C2 (sv) | 2005-07-26 |
EP1694912A1 (en) | 2006-08-30 |
CA2550107A1 (en) | 2005-06-30 |
KR20060123304A (ko) | 2006-12-01 |
WO2005059246A1 (en) | 2005-06-30 |
US20070158045A1 (en) | 2007-07-12 |
SE0303516L (sv) | 2005-06-20 |
SE0303516D0 (sv) | 2003-12-19 |
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