公开(公告)号：US06197437B1

公开(公告)日：2001-03-06

申请号：US09255168

申请日：1999-02-22

申请人： David Martin Bielec ,  Samuel Conrad DuBois ,  Subramaniam Rangaswamy

发明人： David Martin Bielec ,  Samuel Conrad DuBois ,  Subramaniam Rangaswamy

IPC分类号： B32B1504

CPC分类号： B29C47/0847 ,  B22D17/2023 ,  B23K35/304 ,  B23K35/327 ,  B29C45/62 ,  B29C47/0009 ,  B29C47/66 ,  B32B15/013 ,  B32B15/015 ,  C23C24/10 ,  C23C26/02 ,  Y10T428/12576 ,  Y10T428/12861 ,  Y10T428/12931 ,  Y10T428/12937 ,  Y10T428/12944

摘要： A composite barrel for use in extrusion or injection molding is disclosed. The composite barrel includes an outer housing having a cylindrical bore that extends throughout the length of the outer housing. A wear-resistant lining is disposed on an interior surface that defines the cylindrical bore. The lining is fabricated from an alloy that includes a base metal and phosphorus and the lining may contain hard abrasion-resistant particulate, such as tungsten carbide. The base metal is nickel or cobalt or a mixture of nickel and cobalt. The alloy is typically applied by centrifugal casting and can be cast in a nitrogen-rich atmosphere without creating undesirable lining porosity. Such linings can be made for a fraction of the cost of comparable linings that must be cast under vacuum or in an atmosphere of argon.

摘要翻译： 公开了一种用于挤出或注射成型的复合筒。 复合筒包括具有在外壳的整个长度上延伸的圆柱形孔的外壳。 耐磨衬里设置在限定圆柱形孔的内表面上。 衬里由包括贱金属和磷的合金制成，衬里可以含有硬质耐磨颗粒，例如碳化钨。 贱金属是镍或钴或镍和钴的混合物。 合金通常通过离心铸造施加，并且可以在富氮气氛中铸造，而不产生不期望的衬里孔隙率。 这样的内衬可以制造成在真空下或在氩气气氛中必须铸造的可比衬里的一小部分成本。