Maintenance, Lubrication and cutting fluid Overview
Misc
Misc
100
What is the difference between ferrous and non-ferrous metals?
What is Ferrous metals contain iron while non-ferrous metals do not contain iron.
100
1. Briefly define the term heat treatment.
What is Controlled heating and cooling of metals to change their characteristics
100
1. Why is a routine maintenance plan important?
What is To keep machinery in good, safe working order.
100
1. What are the two major types of cutting fluids?
What is Oil based and chemical based
100
1. Briefly define annealing.
What is Heating a steel slightly below the hardening temperature and cooling slowly to return it to its soft condition.
200
1. Briefly describe an alloy.
What is A combination of metals or a metal and other elements.
200
What percent of carbon is required to perform direct hardening on steel
What is Direct hardening can be performed on steel containing at least .3% carbon.
200
1. What is a lubricant?
What is Greases and oils used to cool and minimize wear between moving parts of machinery.
200
1. What is a wetting agent?
What is A cutting fluid additive that helps the fluid stick to the tool and work
200
1. In addition to standard PPE, what specific PPE and safety precautions should be used during heat treating?
What is Wear a heat resistant face shield, long sleeve fire resistant jacket and gloves. Handle metals with long handled tongs. When lighting a gas-fired furnace, keep the door open. Use metal signs with the word ‘hot’ to identify hot metals, but still treat all metals in the heat treating area as if they were hot.
300
Name three alloying elements added to steel.
What is Answers will vary and can include manganese, chromium, molybdenum, nickel, tungsten, vanadium, silicon, lead, boron
300
1. What type of hardening operation that leaves the inner core in a softer condition is sometimes performed on medium-carbon steels?
What is Surface hardening
300
1. List three methods of applying lubricants to machine tools.
What is Answers will vary and can include reservoirs, oil cups, ball oilers, grease zerks
300
1. What two ingredients are often used as additives to improve lubrication qualities of cutting oils?
What is Sulfur and chlorine
300
1. What is a Brale penetrator and what hardness scale uses it?
What is It is a diamond tipped point used to test and measure hardness on the Rockwell C scale.
400
1. What is cast iron?
What is A very hard ferrous metal that contains high amounts of carbon (usually between 1.7 and 4.5%). It is cast into shapes by pouring molten metal into molds.
400
1. In what two ways can the process described in the previous question be accomplished?
What is Flame or induction hardening
400
1. Briefly describe a gib.
What is A tapered wedge adjusted between the mating parts of a dovetail slide to tighten the fit of the slide.
400
1. What is the major benefit of cutting fluids that contain water?
What is High cooling ability
400
1. What does IADS stand for?
What is International Alloy Designation System
500
1. What element is in stainless steel that makes it corrosion resistant?
What is Chromium
500
What method is used to harden low-carbon steels?
What is Case hardening
500
1. What are the purposes of cutting fluids?
What is Cool the cutting tool, cool the workpiece being machined, reduce friction between the cutting tool and material, wash away chips
500
1. List three methods of applying cutting fluids.
What is Manually (by brush, spray bottle, squirt bottle), flood system, mist system