https://qinwei.fun/en/series/laser-cladding/Recent content in Laser Cladding on 乘物游心录 · Technical NotesHugo -- gohugo.ioenSun, 26 Jul 2026 00:00:00 +0800https://qinwei.fun/en/posts/laser-cladding-process-selection/Mon, 01 Sep 2025 06:50:00 +0800https://qinwei.fun/en/posts/laser-cladding-process-selection/<blockquote><p>Laser cladding is a process family for repair, surface enhancement, and directed-energy deposition. This guide connects its metallurgical basis, complete workflow, coupled parameters, defect mechanisms, and the engineering decision between laser cladding, PTA, thermal spray, arc hardfacing, and hard chrome.</p> </blockquote><div class="c-article-tags" role="list" aria-label="Article keywords"> <span role="listitem">Metallurgical bonding</span> <span role="listitem">Melt-pool control</span> <span role="listitem">Parameter coupling</span> <span role="listitem">Process selection</span> </div> <p><span class="c-section-number" aria-hidden="true">01</span></p>https://qinwei.fun/en/posts/dynamic-beam-shaping-ded-microstructure/Mon, 05 May 2025 22:20:00 +0800https://qinwei.fun/en/posts/dynamic-beam-shaping-ded-microstructure/<blockquote class="c-article-lead"> Dynamic beam shaping adds a new control variable to directed energy deposition: the spatial distribution of laser power can change during the build. By modifying the local thermal cycle, a deformable mirror can reshape the melt pool and alter grain morphology and crystallographic texture without changing nominal power, speed, or powder feed. </blockquote> <p><span class="c-article-tag">Dynamic beam shaping</span> <span class="c-article-tag">Deformable mirrors</span> <span class="c-article-tag">Power-density distribution</span> <span class="c-article-tag">Microstructure</span> </p>https://qinwei.fun/en/posts/laser-cladding-defect-mechanisms-suppression/Sat, 03 May 2025 21:33:00 +0800https://qinwei.fun/en/posts/laser-cladding-defect-mechanisms-suppression/<blockquote class="c-article-lead"> Pores and cracks do not form independently. Forces drive melt-pool flow; flow redistributes heat, solute, and bubbles; solidification conditions determine grain morphology; and thermal cycling and phase transformation create residual stress. Defect control becomes effective only when material selection, process parameters, and external fields are organized along that causal chain. </blockquote> <p><span class="c-article-tag">Melt-pool flow</span> <span class="c-article-tag">Grain growth</span> <span class="c-article-tag">Pores and cracks</span> <span class="c-article-tag">Defect suppression</span> </p>https://qinwei.fun/en/posts/laser-cleaning-cladding-pressure-vessel/Wed, 26 Feb 2025 21:27:00 +0800https://qinwei.fun/en/posts/laser-cleaning-cladding-pressure-vessel/<blockquote class="c-article-lead"> For Q345R pressure-vessel steel, one laser platform can first remove rust with pulsed irradiation and then switch to continuous-wave Inconel 625 cladding. The cleaning pass also leaves useful residual heat, turning surface preparation, preheat, and metallurgical repair into a shorter, safer, and measurable process chain. </blockquote> <p><span class="c-article-tag">Q345R steel</span> <span class="c-article-tag">Inconel 625</span> <span class="c-article-tag">Cleaning–cladding integration</span> <span class="c-article-tag">Pressure-vessel repair</span> </p>https://qinwei.fun/en/posts/laser-cladding-aerospace-repair/Mon, 24 Feb 2025 21:43:00 +0800https://qinwei.fun/en/posts/laser-cladding-aerospace-repair/<blockquote class="c-article-lead"> Hard chrome was a common repair coating for aerospace manufacturing tools, but hexavalent-chromium hazards, delamination risk, and limited thickness increasingly conflict with green manufacturing and reliability requirements. A study on a ring-shaped 40HM steel tool shows that NiCrBSi laser cladding can create an approximately 2 mm metallurgically bonded repair layer with enough stock for finish grinding. </blockquote> <p><span class="c-article-tag">Aerospace tooling</span> <span class="c-article-tag">NiCrBSi</span> <span class="c-article-tag">Hard-chrome replacement</span> <span class="c-article-tag">Remanufacturing</span> </p>