- Branża: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who electroplates rotogravure printing cylinders with coating of copper and grinds plates to specifications, using grinding machines. Respnsibilities include:
* Immerses cylinder in cleaning bath, using chain hoist.
* Removes cylinder and places cylinder in copper sulfate plating solution for prescribed period of time to cover cylinder with copper.
* Removes cylinder from plating vat, rinses in water, and fastens cylinder between centers of grinding machine, using handtools.
* Selects and fastens abrasive wheel onto spindle of machine.
* Starts machine and turns handwheels to bring abrasive wheel into contact with surface of cylinder, and to engage automatic feed.
* Measures dimension of cylinder surfaces during grinding and polishing operation, using micrometers to obtain required precision.
* Removes finished cylinder from machine and places cylinder in rack.
Industry:Professional careers
A professional who electroplates rotogravure printing cylinders with coating of copper and grinds plates to specifications, using grinding machines. Respnsibilities include:
* Immerses cylinder in cleaning bath, using chain hoist.
* Removes cylinder and places cylinder in copper sulfate plating solution for prescribed period of time to cover cylinder with copper.
* Removes cylinder from plating vat, rinses in water, and fastens cylinder between centers of grinding machine, using handtools.
* Selects and fastens abrasive wheel onto spindle of machine.
* Starts machine and turns handwheels to bring abrasive wheel into contact with surface of cylinder, and to engage automatic feed.
* Measures dimension of cylinder surfaces during grinding and polishing operation, using micrometers to obtain required precision.
* Removes finished cylinder from machine and places cylinder in rack.
Industry:Professional careers
A professional who electroplates phonograph record matrices to form metal replicas of positive and negative recorded surfaces, and to form stamper used in pressing phonograph records. Respnsibilities include:
* Inserts silver-coated lacquer disk (original recording) in rubber masking ring to prevent plating of specified surfaces, such as edges of disk.
* Hangs disk in tanks containing plating solutions, such as nickel and copper or inserts disk over centering pin of automatic plating tanks to form negative metal master matrix of disk.
* Observes dials and gauges to ensure solutions and electric current flowing through solutions conform to specifications, and adjusts controls as required.
* Removes plated disk from tanks after specified time, removes masking ring, washes and dries disk, and routes disk to finishing department for stripping and finishing process by matrix worker.
* Washes master matrix after finishing process to prevent adhesion during subsequent plating processes.
* Plates master matrix to form mother matrix and plates mother to form stamper used on record presses, following prescribed plating procedures.
* May prepare and test plating solutions.
Industry:Professional careers
A professional who maintains electrolytic baths in operating condition for plating phonograph record matrices. Respnsibilities include:
* Draws sample of solution from tanks, using pipette.
* Tests strength of solution, using hydrometer, and adds specified amounts of metallic salts, acid, or water to solution as needed.
* Examines anodes for specified size and for position in baths.
* Activates controls and reads meters to test electrical connections for open or short condition.
Industry:Professional careers
A professional who tends machine that coats wire electrolytically with zinc to protect wire surface from corrosion. Respnsibilities include:
* Mixes zinc solution according to specified formula and turns valves to fill tank with solution.
* Threads wire through machine and sets rheostat to regulate flow of current through solution.
* Starts machine to pull wire through solution.
* Examines surface of wire for defects, such as bubbles or bare spots, and measures thickness of coating, using micrometer.
* Adjusts controls to regulate speed of reel and flow of current to coat wire to specified thickness.
Industry:Professional careers
A professional who controls anodizing equipment to provide corrosion resistant surface to aluminum objects. Respnsibilities include:
* Selects holding rack according to size, shape, and number of objects to be anodized.
* Wires or clips objects to anodizing rack and immerses rack in series of cleaning, etching, and rinsing baths.
* Positions objects in anodizing tank by suspending them from anode.
* Estimates amount of electric current and time required to anodize material.
* Turns rheostat to regulate flow of current.
* Removes objects from tank after specified time, rinses objects, and immerses them in bath of hot water or dichromate solution to seal oxide coating.
* Hangs objects on racks to air-dry.
* May immerse objects in dye bath to color them for decorative or identification purposes.
* May anodize workpiece with corrosion resistant material, using automated equipment that automatically cleans, rinses, and coats.
Industry:Professional careers
A professional who controls anodizing equipment to provide corrosion resistant surface to aluminum objects. Respnsibilities include:
* Selects holding rack according to size, shape, and number of objects to be anodized.
* Wires or clips objects to anodizing rack and immerses rack in series of cleaning, etching, and rinsing baths.
* Positions objects in anodizing tank by suspending them from anode.
* Estimates amount of electric current and time required to anodize material.
* Turns rheostat to regulate flow of current.
* Removes objects from tank after specified time, rinses objects, and immerses them in bath of hot water or dichromate solution to seal oxide coating.
* Hangs objects on racks to air-dry.
* May immerse objects in dye bath to color them for decorative or identification purposes.
* May anodize workpiece with corrosion resistant material, using automated equipment that automatically cleans, rinses, and coats.
Industry:Professional careers
A professional who plates component parts, such as micromesh screen patterns and electronic tubes, used in medical and laboratory measuring and controlling instruments, using electrolytic plating tank. Respnsibilities include:
* Positions screen pattern or component part in frame or on rack, and hangs frame or rack in plating tank.
* Sets switch for specified plating time, and activates electric current to deposit ionized metal on nonprinted area of screen pattern or component part.
* Immerses electroformed part in water to rinse off electrolyte, and immerses rinsed part in solvent to dissolve pattern.
* May measure thickness of electroplating on component part to verify conformance to specifications, using micrometer.
Industry:Professional careers
A professional who performs any combination of following tasks involved in finishing and inspecting metal phonograph matrices after electroplating processes. Respnsibilities include:
* Strips (separates) master, mother, and stamper matrices, using handtools, files, and knife.
* Holds matrices against sanding belt or grinding wheel of bench grinder to remove burrs.
* Punches center hole in stamper and mother matrices, using punch press.
* Fills offcenter holes with solder, using soldering iron or acetylene torch.
* Steam cleans and polishes matrices, using brushes, cloths, and polishing compounds.
* Examines stamper matrices for defects, and weighs matrices to ensure conformance to standards, using scale.
* Cuts and flares edges of stamper matrices, using press.
* Marks identifying information on master matrices, using scribe.
Industry:Professional careers
