喷涂材料与轰击微粒相结合实现的热喷涂涂层成形方法

• Format: Patent
• Language: Chinese
• Published: 01.03.2019
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

本发明公开了种喷涂材料与轰击微粒相结合实现的热喷涂涂层成形方法，包括：喷涂材料通过喷涂热源加热至熔融或完全熔化状态，通过气体射流加速推动，撞击到基体表面或已沉积的涂层表面，与此同时，具有弹塑性应变能的轰击微粒在同气体射流或单独气体射流的作用下轰击已经扁平化沉积的涂层，与涂层碰撞部分或全部发生反弹而耗散，其中：轰击微粒轰击涂层前的受热温度低于其熔点。本发明通过简单有效、低成本的方法解决了现有热喷涂层残余拉应力大、涂层质量不高等问题，改善了涂层内部的残余应力分布的同时，不影响喷涂材料的沉积效果，进而产生涂层性能强化效应，提高了涂层的本征性能及使用性能。 The invention discloses a heat spraying coating molding method achieved through spraying material and bombardment particle combination. The heat spraying coating molding method includes the steps that a spraying material is heated by a spraying heat source to be in the fusion or complete molten state, and hits a base surface or deposited coating surface through gas jetting accelerated push; and at the same time, bombardment particles with elastic-plastic strain energy bombard a coating subject to flattening deposition under the effect of same has jetting or single gas jetting to partially or fully collide with the coating to generate rebounding or dissipation, wherein the heated temperature of the bombardment particles before coating bo