激光沉积钛LASER DEPOSITED TITANIUM
1. INTRODUCTION 介绍
A. The data in this subject comes from Boeing Material Specification BMS 7-361 for laser deposition of titanium. Access to the Boeing Material Specifications is available.
本主题中的数据来自波音材料规范 BMS 7-361，用于钛的激光沉积。可查阅波音材料规格。
B. The data is general. It is not about all situations or specific installations. Use this data to help you write minimum standards.
数据是通用的。并不涉及所有情况或特定安装。请使用这些数据来帮助您制定最低标准。
C. This procedure applies a layer of titanium alloy material to build up the surfaces of aircraft parts machined during repair. But this procedure is for Ti-6Al-4V titanium alloy parts only.
本程序在修理过程中加工的飞机零件表面涂上一层钛合金材料进行堆积。但本程序仅适用于 Ti-6Al-4V 钛合金零件。
D. Refer to SOPM 20-00-00 for a list of all the vendor names and addresses.
有关所有供应商名称和地址的列表，请参阅SOPM 20-00-00。
2. GENERAL 通用
A. This laser deposition procedure uses a commercially-available solid state laser machine with 1.06 nanometer wavelength, and an adjustable power output range of 800-1000 watts.
本激光沉积程序使用的是市场上销售的固体激光机，波长为 1.06 纳米，输出功率在 800-1000 瓦之间可调。
B. Definitions
定义
(1) Chamber: A closed container in which the atmosphere can be controlled
腔室： 可控制大气的封闭容器
(2) Inert gas atmosphere: The controlled atmosphere inside the chamber
惰性气体大气： 腔室内的可控大气
(3) Laser Processing Chamber Cycle: A sequence of events for the procedure:
激光加工室周期： 程序的一系列事件：
(a) Load the chamber with the part to be given the deposit
将需要沉积的零件装入腔室
(b) Cover (close) the chamber
盖上（关闭）腔室
(c) Gas fill
充气
(d) Process: Apply the deposit
加工： 涂抹沉积物
(e) Unload the chamber: Open it to let you adjust the position of the part for more deposits
卸载腔室： 将其打开，以便调整零件的位置，以获得更多沉积物
(4) Target plate: A titanium plate used as a test panel, to apply practice deposits of titanium powder to adjust the parameters for good deposits on production parts.
目标板： 用作测试板的钛板，用于钛粉的实践沉积，以调整生产零件的良好沉积参数。
3. EQUIPMENT 设备
A. Laser: Triumpf DMD 505 10kw Nd:Yag laser system, V65826
激光器：Triumpf DMD 505 10kw Nd:Yag 激光系统，V65826
B. Target plate: AMS 4911, which supersedes AMS-T-9046 for Ti-6Al-4V titanium alloy (Target Stores, Inc.)
靶板：AMS 4911，取代 AMS-T-9046，用于 Ti-6Al-4V 钛合金（Target Stores, Inc.）
4. MATERIALS 材料
A. Acetone: ASTM D 329
丙酮：ASTM D 329
B. Argon: MIL-PRF-27415, Grade A
氩气：MIL-PRF-27415，A 级
C. Titanium powder: AMS 4998. Analyze the powder as specified in AMS 2249.
钛粉：AMS 4998。按 AMS 2249 规定的方法分析粉末。
5. QUALIFICATION TEST SAMPLE 合格测试样品
A. Before you start to deposit titanium on production parts, apply some practice deposits on a test plate to find the best powder flow rate, purge flow, and machine travel speed. This is equivalent to the standard practice of test welding beads on scrap or test panels before actual welding on good parts.
在生产零件开始沉淀钛之前，先在测试板上应用一些沉淀操作，以找到最佳的粉末流速、吹扫流量和机器运行速度。这相当于在好零件上进行实际焊接之前，在废料或测试板上测试焊珠的标准做法。
B. Get a sample target plate. A flat plate will be good for the first tries.
获取目标板样本。初试时最好使用平板。
C. Clean the plate with acetone. Make sure the deposit area and adjacent areas have no slag, surface oxides, scale, protective finishes, oils, dirt or other unwanted materials.
用丙酮清洁平板。确保沉积区域和邻近区域没有熔渣、表面氧化物、垢、保护层、油、污垢或其他不需要的物质。
D. Put the plate in the chamber. Close the chamber and purge the chamber atmosphere with argon until the oxygen is 1200 ppm or less.
将平板放入腔室。关闭腔室，用氩气吹扫腔室的空气，直到氧气含量为 1200 ppm或更低。
E. Start with a laser power between 800 and 1000 watts.
开始时使用 800 到 1000 瓦之间的激光功率。
F. Apply some straight lines (beads) of titanium deposit to the plate.
在板上涂抹一些钛沉积物的直线（珠状）。
G. Examine the deposited beads for good metal flow, with no tan or blue colors, voids or porosity.
检查沉积珠的金属流动性是否良好，有无棕褐色或蓝色、空隙或气孔。
H. If necessary, adjust the machine parameters and try again. When the results are good, record the values of the parameters to help during the repair of actual parts.
如有必要，调整机器参数并再次尝试。结果良好时，记录参数值，以便在实际零件修理时提供帮助。
6. REPAIR OF PARTS 修理零件
A. Enter the parameters you recorded from the test runs on the practice plate into the numeric controller of the laser machine: laser power, gas flow and powder flow. If the machine has an oxygen sensor, use it to monitor the purged atmosphere of the work chamber during deposition.
将操作板上试运行记录的参数输入激光机的数字控制器：激光功率、气体流量和粉末流量。如果机器有氧气传感器，则在沉积过程中使用它来监控工作腔的净化空气。
B. Emulsion clean the part (SOPM 20-30-03).
乳化液清洗零件（SOPM 20-30-03）。
C. Put the part in a holding fixture and put this in the chamber.
将零件放入固定夹具，然后将其放入腔室。
D. Close the chamber and purge the chamber atmosphere with argon until the oxygen is 1200 ppm or less.
关闭腔室并用氩气吹扫腔室的大气，直到氧气含量小于或等于 1200 ppm。
E. Apply a layer of titanium to the specified repair area. Maximum repair deposition is 0.075 inch. But we recommend a layer 0.125 inch thick to let you machine the layer to design dimensions.
在规定的修理区域涂上一层钛。最大修理沉积量为 0.075 英寸。但我们建议敷一层 0.125 英寸厚的钛层，以便用机器将钛层加工到设计尺寸。
F. Visually examine as specified by BAC5975 par. 11.3. Then penetrant examine (SOPM 20-20-02).
按照 BAC5975 第 11.3 节的规定进行外观检查。然后进行渗透检查（SOPM 20-20-02）。
G. After the repair, continue with subsequent procedures as specified by the overhaul instructions.
修理后，继续执行大修说明规定的后续程序。
H. A bake for stress relief is not necessary.
无需进行为了应力消除的烘烤。