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    • 6. 发明授权
    • Method of preparing and coating aluminum bore surfaces
    • 铝合金表面的制备和涂覆方法
    • US5622753A
    • 1997-04-22
    • US630106
    • 1996-04-08
    • Barry E. ShepleyChristopher K. PalazzoloRobert E. DeJackJohn E. ChanceyDeborah R. Pank
    • Barry E. ShepleyChristopher K. PalazzoloRobert E. DeJackJohn E. ChanceyDeborah R. Pank
    • C23C4/02C23C4/16C23C4/10B05D7/22
    • C23C4/02C23C4/16
    • A method of preparing and coating cylindrical bore surfaces of an aluminum workpiece that comprises (a) inserting and rotationally reciprocally moving a plurality of honing elements against the bore surface with a pressure of at least 30 psi to effect a pattern of spiral overlapping abrasions on said surface, each element being constituted of multifaceted, irregular-shaped, abrasive particles (i.e., diamond or SiC) having a particle size of 30-1300 micrometers. The particles, when in contact with the surface, plow micro-sized, non-smooth and irregularly spaced grooves in the aluminum workpiece resulting in spiral peaks and valleys along the direction of movement of the particles, whereupon repeated reciprocation and rotation of the elements (i.e. 50-200 sfm) thereagainst results in overlapping grooves and cross-abrading of the prior peaks and valleys accompanied by a molding and folding over of certain of the peaks and valleys to create irregular, micro-sized tears, folds, and undercuts; and (b) thermally depositing wear resistant metallic particles onto the abraded surface to form a cohesive coating, said deposited particles migrating into the non-smooth grooves and into the irregular tears, folds, and undercuts during thermal deposition to increase the mechanical bond strength of the coating to the workpiece surface.
    • 一种制备和涂覆铝工件的圆柱形孔表面的方法,其包括(a)以至少30psi的压力将多个珩磨元件插入并旋转地往复移动抵靠所述孔表面,以在所述第二表面上形成螺旋重叠擦伤图案 表面,每个元件由具有30-1300微米的粒度的多面,不规则形状的磨料颗粒(即金刚石或SiC)构成。 颗粒当与表面接触时,在铝工件中犁微尺寸的,非平滑的和不规则的间隔开的凹槽,导致沿着颗粒运动方向的螺旋形峰和谷,从而元件的反复往复运动和旋转 即50-200 sfm),导致先前的峰谷重叠的沟槽和交叉研磨,伴随着某些峰和谷的模制和折叠,以产生不规则的微尺寸的撕裂,褶皱和底切; 和(b)将耐磨金属颗粒热沉积到磨损的表面上以形成粘合涂层,所述沉积的颗粒在热沉积期间迁移到非平滑的凹槽中并进入不规则的泪液,折叠和底切以提高机械粘合强度 涂层到工件表面。
    • 10. 发明授权
    • Method of treating light metal cylinder bore walls to receive thermal
sprayed metal coatings
    • 处理轻金属圆筒孔壁以接受热喷涂金属涂层的方法
    • US5691004A
    • 1997-11-25
    • US678310
    • 1996-07-11
    • Christopher K. PalazzoloV. Durga Nageswar RaoBarry E. Shepley
    • Christopher K. PalazzoloV. Durga Nageswar RaoBarry E. Shepley
    • C23C4/02C23C4/06
    • C23C4/02C23C4/06C23C4/18
    • A method of treating a light metal cylinder bore wall to adherently receive a thermally sprayed metallic coating, that comprises (a) honing the wall to produce a net cylinder shape surface by use of spiral overlapping cross-abrasions having certain peaks and valleys of the abrasions folded over and molded to create tears, folds and undercuts rendering a hook and ladder effect, the honing being carried out with the use of a machining coolant to prevent burnishing of the walls; (b) either concurrently or shortly after step (a), washing the honed surface with a hot alkaline solution comprising (i) a non-soaping aluminate forming agent (sodium xanthate) that produces a residue on the walls, and (ii) surfactants that facilitate wetting of the walls even when some steam bubbles may be present; (c) rinsing the washed surfaces without disturbing the residue; and (d) thermally spraying a metallic bond coat and top coat on the honed and washed surface to render adhesion between the coating and prepared surface that is at least 6000 psi.
    • 一种处理轻金属圆筒孔壁的方法,以粘结地接纳热喷涂的金属涂层,其包括(a)通过使用具有特定峰和谷的磨损的螺旋重叠交叉擦伤来珩磨壁以产生网筒形状表面 折叠并成型以产生呈现钩和梯子效应的撕裂,褶皱和底切,使用机加工冷却剂​​进行珩磨以防止壁的抛光; (b)在步骤(a)之后同时或不久之后,用热碱性溶液洗涤珩磨的表面,所述热碱性溶液包含(i)在壁上产生残留物的非皂化铝酸盐形成剂(黄原酸钠),和(ii)表面活性剂 即使当存在一些蒸汽气泡时也促进壁的润湿; (c)冲洗洗涤的表面而不干扰残留物; 和(d)在磨碎和洗涤的表面上热喷涂金属粘合涂层和顶涂层,以使涂层和制备的表面之间的粘合力至少为6000psi。