The China Standards Online Service Network has recently added three national standards related to additive manufacturing metals, covering inspection methods for directed energy deposition processes, technical specifications for titanium alloy parts, and requirements for dedicated titanium powders. Among them, GB/T 43615-2023 "Additive Manufacturing - Ultrasonic Testing Methods for Directed Energy Deposition Metal Formed Parts" was issued and implemented on December 28, 2023; GB/T 42622-2023 "Additive Manufacturing - Titanium and Titanium Alloy Powders for Laser Directed Energy Deposition" was issued on May 23, 2023, and implemented on December 1; and GB/T 47005-2026 "Additive Manufacturing - Technical Specifications for Laser Directed Energy Deposition Titanium Alloy Parts" was issued on January 28, 2026, and is scheduled for implementation on August 1, 2026.
The three standards have clear divisions of responsibility: GB/T 43615-2023 specifies the general requirements, test pieces, reference sensitivity calibration, inspection process, and result evaluation for ultrasonic testing of directed energy deposition metal formed parts, and applies to formed parts with cross-sectional thicknesses from 6 mm to 300 mm; GB/T 42622-2023 sets out the technical requirements, test methods, inspection rules, packaging and storage, and order content for titanium and titanium alloy powders used in laser directed energy deposition; GB/T 47005-2026 covers the trial production, production, and acceptance of six titanium alloy grades—TA15, TC4, TC11, TC17, TC18, and TC21—and specifies test methods and delivery preparation.
From powder to formed parts to non-destructive testing, the standards chain is closing. The powder end now has a unified basis for ordering and inspection, the parts end locks down grades and acceptance rules, and the testing end provides an ultrasonic method with a clear applicable thickness range. This means that quality determination for laser directed energy deposition titanium alloy parts will gradually shift from bilateral supplier-buyer agreements to national standard endorsement, and both powder batch consistency and internal defect control in formed parts are being brought onto a standardized track.
Value for powder buyers: ① Check titanium powder test methods and inspection rules against GB/T 42622-2023, and incorporate accompanying documents and order terms into procurement contracts; ② For grades such as TA15, TC4, TC11, TC17, TC18, and TC21, secure powder sources in advance that meet the acceptance requirements of GB/T 47005-2026; ③ Pay attention to ultrasonic testing requirements for the 6 mm to 300 mm thickness range, and work backward to match powder quality with the process window.
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冶金类标准查询 标准列表_中国标准在线服务网
中国标准在线服务网近期集中上线三项增材制造金属相关国家标准,覆盖定向能量沉积工艺的检测方法、钛合金制件技术规范及专用钛粉末要求。其中GB/T 43615-2023《增材制造 定向能量沉积金属成形件超声检测方法》于2023年12月28日发布并实施,GB/T 42622-2023《增材制造 激光定向能量沉积用钛及钛合金粉末》于2023年5月23日发布、12月1日实施;GB/T 47005-2026《增材制造 激光定向能量沉积钛合金制件技术规范》则于2026年1月28日发布,定于2026年8月1日实施。
三项标准分工明确:GB/T 43615-2023规定定向能量沉积金属成形件超声检测的一般要求、被检件、基准灵敏度校验、检测过程及结果评定,适用于横截面厚度6 mm至300 mm的成形件;GB/T 42622-2023对激光定向能量沉积用钛及钛合金粉末的技术要求、试验方法、检验规则、包装贮存及订货单内容作出规定;GB/T 47005-2026覆盖TA15、TC4、TC11、TC17、TC18、TC21六个钛合金牌号的试制、生产与验收,并明确试验方法与交付准备。
从粉末到成形件再到无损检测,标准链条正在闭合。粉末端有了统一的订货与检验依据,制件端锁定牌号与验收规则,检测端给出厚度适用范围明确的超声方法,意味着激光定向能量沉积钛合金件的质量判定将逐步从供需双方约定转向国标背书,粉末批次一致性与成形件内部缺陷控制被同时纳入规范化轨道。
对粉末采购商的价值:① 依据GB/T 42622-2023核对钛粉末的试验方法与检验规则,把随行文件和订货单条款写进采购合同;② 针对TA15、TC4、TC11、TC17、TC18、TC21等牌号提前锁定符合GB/T 47005-2026验收要求的粉末来源;③ 关注6 mm至300 mm厚度区间的超声检测要求,倒推粉末质量与工艺窗口的匹配性。