CN111361237A - 一种复合耐磨抗冲击合金衬板 - Google Patents
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- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
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- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- 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
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Abstract
本发明涉及矿业机械设备技术领域,具体为一种复合耐磨抗冲击合金衬板,包括基板和合金板,所述基板上开设有定位孔,所述合金板上开设有燕尾孔,所述燕尾孔的周围设置有凸台,所述燕尾孔与定位孔连通,燕尾孔内安装有燕尾螺栓,合金板与基板间通过真空焊接固定,能够获得工作面硬度HRC63以上的合金板,其耐磨寿命是高锰钢的4‑6倍,是传统65Mn衬板寿命的7‑10倍,能够大大提高合金板的耐磨性能和使用性能,衬板维修频次大幅减少,对设备起到很好的保护作用,同时大幅的减少维修频次,也大幅减少了工人恶劣工况维修的频次,既降低了使用成本,又提升了生产安全,更提高了企业的经济效益。
Description
技术领域
本发明涉及矿业机械设备技术领域,具体为一种复合耐磨抗冲击合金衬板。
背景技术
衬板是制造业、矿业生产需要的重要易损耗部件,它的使用寿命直接影响了设备的运行效率和企业的生产效益。特别对大型钢铁企业的采、运、选、炼的生产自动化、信息化运行有着关键作用。目前,大部分企业使用的衬板都是单一的金属衬板或复合堆焊衬板,如使用较广泛的高锰钢衬板和高铬堆焊板,但它们在生产工艺和实际使用过程中都存在一定局限性,难以在实际使用中发挥衬板合理作用。由于使用环境的错综复杂,衬板在使用的过程中磨损较快,需要经常将衬板拆除更换,使得衬板的消耗过高,成本较高。
发明内容
为了解决上述的问题,本发明提供一种能够提高寿命的复合耐磨抗冲击合金衬板。
本发明解决其技术问题采用以下技术方案来实现:
一种复合耐磨抗冲击合金衬板,包括基板和合金板,所述基板上开设有定位孔,所述合金板上开设有燕尾孔,所述燕尾孔与定位孔连通,燕尾孔内安装有燕尾螺栓,合金板与基板间通过真空焊接固定制成合金衬板,合金衬板由燕尾螺栓和螺母配合固定在设备上,或者直接采用焊接的方式固定在设备上,所述合金板的制造组成成分包括碳:2.8-3.3份;铬:14-17份;钼:1.0-2.0份;锰:0.5-1.5份;硅:0.5-1.5份;镍:0-5.0份;铜:0.2-0.5份;硼:0.1-0.2份。
优选的,所述合金板的工作面为弧形,合金板的边缘厚度大于10mm,合金板的中心厚度大于20mm。
优选的,所述燕尾孔的周围设置有凸台,所述凸台的高度为5mm。
优选的,所述合金板的生产工艺包括以下步骤:
S1:利用射型机制做外壳;
S2:利用中频感应炉熔融碳、铬、钼、锰、硅、镍、铜和硼材料,获得液态合金;
S3:将液态合金浇筑到外壳内,获得坯料;
S4:对坯料的表面进行打磨,获得半成品;
S5:对半成品进行淬火和回火,获得最终的高硬度耐磨的合金板。
通过采用上述的技术方案,本发明的有益效果是:
本发明所述的一种复合耐磨抗冲击合金衬板,能够获得工作面硬度HRC63以上的合金板,其耐磨寿命是高锰钢的4-6倍,是传统65Mn衬板寿命的7-10倍,能够大大提高合金板的耐磨性能和使用性能,安全性提高,衬板维修频次大幅减少,对设备起到很好的保护作用,同时大幅的减少维修,也大幅减少了工人恶劣工况维修的频次,降低了使用成本,提高了企业的经济效益。
附图说明
图1为本发明的结构示意图;
图2为图1中A-A剖视图。
具体实施方式
下面将结合本发明实施方式中的附图,对本发明实施方式中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施方式,而不是全部的实施方式。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
请参阅图1-2,本发明提供一种技术方案:
一种复合耐磨抗冲击合金衬板,包括基板100和合金板200,所述基板100上开设有定位孔110,所述合金板200上开设有燕尾孔210,所述燕尾孔210与定位孔110连通,燕尾孔210内安装有燕尾螺栓300,合金板200与基板100间通过真空焊接固定制成合金衬板,合金衬板由燕尾螺栓300和螺母配合固定在设备上,或者直接采用焊接的方式固定在设备上,凸台220用于保护燕尾螺栓300,所述合金板200的制造组成成分包括碳:2.8-3.3份;铬:14-17份;钼:1.0-2.0份;锰:0.5-1.5份;硅:0.5-1.5份;镍:0-5.0份;铜:0.2-0.5份;硼:0.1-0.2份。
作为本发明的一种实施方式,所述合金板200的工作面为弧形,合金板200的边缘厚度大于10mm,合金板200的中心厚度大于20mm,可以减少工作时合金板200与物料间的摩擦面积,降低摩擦损耗的速度。
作为本发明的一种实施方式,所述燕尾孔210的周围设置有凸台220,所述凸台220的高度为5mm。
作为本发明的一种实施方式,所述合金板200的生产工艺包括以下步骤:
S1:利用射型机制做外壳;
S2:利用中频感应炉熔融碳、铬、钼、锰、硅、镍、铜和硼材料,获得液态合金;
S3:将液态合金浇筑到外壳内,获得坯料;
S4:对坯料的表面进行打磨,获得半成品;
S5:对半成品进行淬火和回火,获得最终的高硬度耐磨的合金板200。
将上述的合金衬板和一块传统的65Mn衬板分别安装在工况相同的六台筛分机上进行磨损测试,开启六台筛分机进行正常的生产工作,具体的磨损量如下表所示:
从上表可知,合金板200采用上述的生产工艺进行制造,且采用基板100和合金板200复合的结构,能够获得工作面硬度HRC63以上的合金板200,其耐磨寿命是传统65Mn衬板寿命的7-10倍,能够大大提高合金板200的耐磨性能和使用性能,安全性提高,衬板维修频次大幅减少,对设备起到很好的保护作用,同时大幅的减少维修,也大幅减少了工人恶劣工况维修的频次,降低了使用成本,提高了企业的经济效益。
在本发明中,除非另有明确的规定和限定,术语“安装”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电焊连接;可以是直接相连,也可以通过中间媒介间接相连接,可以是两个元件内部的连通或两个以上元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
虽然在上文中已经参考实施例对本发明进行了描述,然而在不脱离本发明的范围的情况下,可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是,只要不存在结构冲突,本发明所披露的实施例中的各项特征均可通过任意方式相互结合起来使用,在本说明书中未对这些组合的情况进行穷举性的描述仅仅是出于省略篇幅和节约资源的考虑。因此,本发明并不局限于文中公开的特定实施例,而是包括落入权利要求的范围内的所有技术方案。
Claims (4)
1.一种复合耐磨抗冲击合金衬板,其特征在于,包括基板和合金板,所述基板上开设有定位孔,所述合金板上开设有燕尾孔,燕尾孔与定位孔连通,燕尾孔内安装有燕尾螺栓,合金板与基板间通过真空焊接固定制成合金衬板,合金衬板由燕尾螺栓和螺母配合固定在设备上,或者直接采用焊接的方式固定在设备上,所述合金板的制造组成成分包括碳:2.8-3.3份;铬:14-17份;钼:1.0-2.0份;锰:0.5-1.5份;硅:0.5-1.5份;镍:0-5.0份;铜:0.2-0.5份;硼:0.1-0.2份。
2.根据权利要求1所述的一种复合耐磨抗冲击合金衬板,其特征在于:所述合金板的工作面为弧形,合金板的边缘厚度大于10mm,合金板的厚度大于20mm。
3.根据权利要求1所述的一种复合耐磨抗冲击合金衬板,其特征在于:所述燕尾孔的周围设置有凸台,所述凸台的高度为5mm。
4.根据权利要求1所述的一种复合耐磨抗冲击合金衬板,其特征在于:所述合金板的生产工艺包括以下步骤:
S1:利用射型机制做砂型模具;
S2:利用中频感应炉熔融碳、铬、钼、锰、硅、镍、铜和硼材料,获得液态合金;
S3:将液态合金浇筑到模具内,获得坯料;
S4:对坯料的表面进行打磨,获得半成品;
S5:对半成品进行淬火和回火,获得最终的高硬度耐磨的合金板。
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CN201982949U (zh) * | 2011-01-27 | 2011-09-21 | 日照正盛耐磨材料有限公司 | 一种带螺栓的耐磨衬板 |
RU2533631C1 (ru) * | 2013-07-30 | 2014-11-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Износостойкий чугун |
CN212147807U (zh) * | 2020-04-09 | 2020-12-15 | 湖南海斯特材料科技有限公司 | 一种复合耐磨抗冲击合金衬板 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201982949U (zh) * | 2011-01-27 | 2011-09-21 | 日照正盛耐磨材料有限公司 | 一种带螺栓的耐磨衬板 |
RU2533631C1 (ru) * | 2013-07-30 | 2014-11-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Износостойкий чугун |
CN212147807U (zh) * | 2020-04-09 | 2020-12-15 | 湖南海斯特材料科技有限公司 | 一种复合耐磨抗冲击合金衬板 |
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