SharePoint中。 SPFile.OpenBinary（）返回包含内容类型元数据的文档

I have a method which downloads sharepoint documents to the local disk. I use SPFile.OpenBinary() method to get physical file, but it contains all fields of a parent DocumentLibrary. Does anybody know how to clear file (doc file) from these fields? I found only way to do it using Word interop library (method described here I have a method which downloads sharepoint docu