大连鸿福门窗有限公司教你然后辨析断桥铝门窗的真假

2017-01-08

大连鸿福门窗有限公司教你然后辨析断桥铝门窗的真假

一、看型材表面质量
型材质量的好坏可以从断桥铝型材的表面观察,好的断桥铝型材表面光泽有质感,表面喷涂颜色处理也会也自然,看着感觉流畅;次的断桥铝门窗则表面粗糙,没有光泽,看起来感觉不自然,用了一段时间后,差的断桥铝门窗就会出现变色或褪色,色泽不饱满。
二、看型材切面构造
好的断桥铝门窗型材切面几何角度精确,型材不会发生弯曲扭拧,角度端正。而且切面厚度足量,就比如定制的60型号的断桥铝门窗,60是指型材厚度为6公分,而这6公分为十足的断桥铝材质,穿条占的比重少;而较次的断桥铝门窗,就会采用虚撑的60型材,用穿条来撑起这个厚度,铝的材质比较少。
三、看型材的隔热条
隔热条分进口的和国产的,国产隔热条大部分为塑料的PVC材质,进口隔热条是聚酰胺的,即为尼龙隔热条。品质好的断桥铝门窗,采用的进口隔热条,它的耐高温性及耐低温性更好,热传导值低,更能实现隔热保温环保节能的效果,可以节约能源20%——30%。

奸商最常见的五种“招式”
一是“偷梁换柱”:
用低成本的国家有关部门明确规定只能用于非结构材料的通用塑料—聚氯乙烯(PVC)隔热条(以下简称PVC隔热条)来替代欧洲公认通用了几十年的玻璃纤维增强聚酰胺尼龙(PA66)隔热条(以下简称尼龙66隔热条)。由于PVC的线膨胀系数(8.3*10-5K-1)与铝合金的线膨胀系数(2.35*10-5K-1))相差甚远,而且其强度低(仅30N/mm2左右)、耐热性差(80℃)、抗老化性能差等众多缺陷导致用PVC隔热条穿条复合后的隔热铝型材而制成的隔热门窗在实际安装使用后由于热胀冷缩的原因会造成PVC隔热条在铝型材内出现松动,甚至完全脱离,轻则导致窗体松动、变形,从而破坏门窗的气密性和水密性,重则导致窗体整体松散、脱离。
二是“瞒天过海”:
在隔热铝门窗工程实例中不乏有企业用进口尼龙66隔热条的隔热样窗进行投标,中标后再采用PVC隔热条或国产尼龙隔热条进行实际加工或以进口尼龙66隔热条与PVC或其他隔热条混用,而将进口尼龙66隔热条有商标标识的条面对外,以“证明”所用隔热条的“质量档次身份”。这种“瞒天过海”具有很强的隐蔽性,隔热铝门窗工程业主只有在隔热铝型材尚未进行加工之前方可进行鉴别,因为只有此时的两支隔热条均是可识别的。
三是“浑水摸鱼”:
隔热条的材质是隔热门窗质量的基础保证,但决不是唯一的保证。2003年国产尼龙隔热条开始面市,为了降低成本,国产尼龙隔热条采用一般的矿物质材料(俗称填料)全部或部分代替玻璃纤维来填充聚酰胺尼龙进行加工生产。这种隔热条在机械强度、耐热性能、抗老化性能等方面都无法与玻璃纤维增强的尼龙66隔热条相比。
四是“投机取巧”:
一些隔热铝门窗企业在充分研究、把握了PVC隔热条、国产尼龙隔热条及进口尼龙66隔热条这三者之间较大的性能差别后采取了既经济又相对保险的折中方案:窗框铝型材采用低质价廉的PVC或国产尼龙隔热条,窗扇铝型材采用高品质的进口尼龙66隔热条。他们认为:窗框铝型材是固定于墙体之上的,即使有质量风险也不会出大问题,而窗扇铝型材是活动的且是单独承载受力的,所以不能也不敢有质量隐患。

综上所述,人们可以看到在隔热铝合金门窗专用隔热条行业标准尚未出台前,隔热铝门窗市场出现了令人忧虑的现象,而隔热门窗工程业主对隔热铝门窗这一新技术的认识不够全面、不够深刻是产生这些现象最主要的原因。但人们更应该呼吁门窗行业的有识之士以客观科学的态度、以视产品质量为命脉的境界、以对消费者负责的职业道德使这场无序的竞争尽早规范起来。对产品质量负责、对人民生活质量负责的职业态度是树企立人的原则,否则即使相关标准出台了也是枉然,制定标准就是为对产品的质量进行把关,没有了质量意识则一切成为虚设。
五是“滥竽充数”
有的隔热铝门窗企业在研究人们心理,人们只关心隔热条的材质质量,而很少考虑外两层铝合金的合金质量,按照国家标准建筑型材铝合金要是6063牌合金,而有的企业用不达标的铝合金来做隔热铝复合门窗,造成窗扇、窗框组角不严,门窗难以隔热保温。所以不仅隔热条有质量好坏之分,其铝合金也要看其硬度、强度,型材表面亦有静电喷涂和电泳涂漆的区别,前者为物理变化,后者为化学变化。

 

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