SYSTEMS AND METHODS FOR WELDING
A welding method includes providing a first workpiece and a second workpiece, positioning the first workpiece to contact the second workpiece, coating a portion of a selected one of the first and second workpieces with an absorbing layer; and welding the first workpiece and the second workpiece by heating the selected one of the first and second workpieces through the absorbing layer.
1 . A welding method comprising:
providing a first workpiece and a second workpiece;
positioning the first workpiece to contact the second workpiece;
coating a portion of a selected one of the first and second workpieces with an absorbing layer; and
welding the first workpiece and the second workpiece by heating the selected one of the first and second workpieces through the absorbing layer.
2 . The welding method of claim 1 , further comprising:
removing the absorbing layer after the first workpiece and the second workpiece are welded.
3 . The welding method of claim 1 , wherein the providing includes providing the first workpiece and the second workpiece as metal workpieces.
4 . The welding method of claim 1 , wherein the coating includes providing the absorbing layer as an electrically nonconductive layer.
5 . The welding method of claim 4 , wherein the coating further includes providing the absorbing layer as an inorganic compound with a solvent.
6 . The welding method of claim 5 , where in the inorganic compound is molybdenum disulfide.
7 . The welding method of claim 4 , wherein the coating further includes coating the selected one of the first and second workpieces with the absorbing layer having a thickness of less than 10 microns.
8 . The welding method of claim 4 , wherein the coating further includes providing the absorbing layer as a material that absorbs at least one of infrared and micro wavelengths.
9 . The welding method of claim 1 , wherein the coating includes spraying the absorbing layer on the portion of the selected one of the first and second workpieces.
10 . The welding method of claim 1 , wherein the welding includes directing a laser beam onto the coated portion to heat the selected one of the first and second workpieces.
11 . A welding method comprising:
providing a first workpiece;
coating at least a portion of the first workpiece with an absorbing layer;
positioning the first workpiece and a second workpiece in contact, with the absorbing layer exposed; and
welding the first workpiece to the second workpiece by heating the first workpiece through the absorbing layer.
12 . The welding method of claim 11 , further comprising:
removing the absorbing layer after the first workpiece and the second workpiece are welded.
13 . The welding method of claim 11 , wherein the coating includes providing the absorbing layer as an electrically nonconductive layer.
14 . The welding method of claim 13 , wherein the coating further includes providing the absorbing layer as an inorganic compound with a solvent.
15 . The welding method of claim 14 , where in the inorganic compound is molybdenum disulfide.
16 . The welding method of claim 13 , wherein the coating further includes coating the first and second workpieces with the absorbing layer having a thickness of less than 10 microns.
17 . The welding method of claim 13 , wherein the coating further includes providing the absorbing layer as a material that absorbs at least one of infrared and micro wavelengths.
18 . The welding method of claim 11 , wherein the coating includes depositing the absorbing layer on the portion of the first with vapor deposition.
19 . The welding method of claim 11 , wherein the welding includes directing a laser beam onto the coated portion to heat the selected one of the first and second workpieces.
20 . A system for welding workpieces, the system comprising:
a heat source configured to heat a first workpiece;
a coating device configured to coat an absorbing layer onto the first workpiece;
an actuator, coupled to the heat source and the coating device, to move the heat source along a first axis and a second axis; and
a controller to control the actuator, heat source, and the depositing device;
wherein, the actuator executes operations to:
coat, by the coating device, an absorbing layer onto the first working piece; and
weld, by the heat source, the first workpiece to a second workpiece in contact with the first working piece, by heating through the absorbing layer.