Term
| WHAT ARE THE THREE DIFFERENT FORMS OF STRESS |
|
Definition
| TENSILE STRESS PULLS A METAL APART COMPRESSION STRESS SQUEEZES THE METAL. AND SHEAR STRESS IS FORCES FROM OPPOSITE DIRECTION THAT WORK TO SEPARATE THE METAL. |
|
|
Term
|
Definition
| THE DEFORMATION OR CHANGE IN SHAPE OF A METAL WHEN A STRESS OR LOAD IS APPLIED. |
|
|
Term
|
Definition
| THE PROPERTY OF A METAL THAT ENABLES IT TO STRAIN (DEFORMATION) WHEN A STRESS LOAD IS APPLIED. |
|
|
Term
| WHAT IS DONE TO FIND TENSILE STRENGH |
|
Definition
| DIVIDE THE FORCE REQUIRED TO PULL THE METAL APART BY THE AREA IN SQUARE INCHES OF A PREPARED SPECIMEN. |
|
|
Term
| WHEN IS YIELD STRENGTH ESTABLISHED |
|
Definition
| WHEN THE METAL SPECIMEN BEGINS TO STRETCH WHILE PRESSURE IS GRADUALLY APPLIED. |
|
|
Term
|
Definition
| THE ABILITY OF A METAL TO WITHSTAND EXTENSIVE PERMANENT DEFORMATION WITHOUT BREAKING OR RUPTURING. |
|
|
Term
| WHAT WILL METALS WITH HIGH PLASTICITY PRODUCE |
|
Definition
| LONG CONTINUOUS CHIPS WHEN MACHINED ON A LATHE |
|
|
Term
|
Definition
| THE ABILITY OF A METAL TO RETURN TO ITS ORIGINAL SIZE AND SHAPE AFTER AN APPLIED FORCE HAS BEEN REMOVED. |
|
|
Term
|
Definition
| THE ABILITY OF A METAL TO BE PERMANENTLY DEFORMED WHEN IT IS BENT OR STRETCHED INTO WIRE FORM WITHOUT BREAKING |
|
|
Term
| WHAT IS DONE TO FIND THE DUCTILITY OF A METAL |
|
Definition
| APPLY THE TENSILE STRENGTH TEST AND MEASURE THE PERCENTAGE OF INCREASED LENGTH. |
|
|
Term
|
Definition
| THE ABILITY OF A METAL TO BE PERMANENTLY DEFORMED BY A COMPRESSION STRESS PRODUCED BY HAMMERING STAMPING, OR ROLLING THE METAL INTO THIN SHEETS. |
|
|
Term
|
Definition
| THE TENDENCY OF A METAL TO BREAK OR CRACK WHEN IT HAS NOT BEEN DEFORMED |
|
|
Term
|
Definition
| THE ABILITY OF A METAL TO WITHSTAND SHOCK TO ENDURE STRESS AND TO DEFORM WITHOUT BREAKING. |
|
|
Term
| HOW IS HARDNESS OF A METAL GENERALLY DEFINED |
|
Definition
| AS ITS ABILITY TO RESIST INDENTATION ABRASION OR WEAR AND CUTTING |
|
|
Term
| WHAT IS THE HARDENABILITY |
|
Definition
| MEASURE OF THE DEPTH (FROM THE METALS SURFACE TOWARD ITS CENTER) TO WHICH CAN BE HARDENED BY HEAR TREATMENT |
|
|
Term
|
Definition
| THE ACTION THAT TAKES PLACE IN A METAL AFTER REPEATED STRESS |
|
|
Term
| WHAT IS CORROSION RESISTANCE |
|
Definition
| ABILITY OF A METAL TO WITHSTAND SURFACE ATTACK BY THE ATMOSPHERE FLUIDS MOISTURE AND ACIDS |
|
|
Term
|
Definition
| THE PROPERTY OF A STEEL OR ALLOY THAT PERMITS IT TO RETAIN ITS PROPERTIES AT HIGH TEMPERATURES. |
|
|
Term
| WHAT DOES WELD ABILITY REFER TO |
|
Definition
| THE RELATIVE CASE WITH WHICH A METAL CAN BE WELDED |
|
|
Term
| WHAT IS THE BASIC FACTOR OF WELDABILITY |
|
Definition
| THE CHEMICAL COMPOSITION OR THE ELEMENTS THAT WERE ADDED DURING THE METALS MANUFACTURE |
|
|
Term
|
Definition
| THE RELATIVE EASE WITH WHICH A METAL CAN BE MACHINED |
|
|
Term
| WHAT ARE THE SEVERAL FACTORS THAT AFFECT THE MACHINABILITY OF METAL |
|
Definition
| DIFFERENT ALLOYING ELEMENTS THE METHOD USED BY THE MANUFACTURER TO FORM THE METAL BAR, HEAT TREATMENT THAT CHANGE THE HARDNESS, |
|
|
Term
| WHAT ARE TWO GENERAL TYPES OF METALS |
|
Definition
|
|
Term
|
Definition
| THOSE METALS WHOSE MAJOR ELEMENT IS IRON |
|
|
Term
| WHAT ARE NONFERROUS METALS |
|
Definition
| THOSE METALS WHOSE MAJOR ELEMENT IS NOT IRON, BUT THEY MAY CONTAIN A SMALL AMOUNT OF IRON AS AN IMPURITY |
|
|
Term
| WHAT IS IRON ORE THE BASIS OF ALL FERROUS METALS CONVERTED TO METAL PIG IRON IN |
|
Definition
|
|
Term
| HOW CAN THE CHARACTERISTICS OF METAL BE FURTHER CHANGED AND IMPROVED |
|
Definition
| BY HEAT TREATMENT AND BY HOLD OR COLD WORKING |
|
|
Term
| WHAT IS THE PRODUCT CALLED OF THE BLAST FURNACE |
|
Definition
|
|
Term
| WHAT IS PIG IRON COMPOSED OF |
|
Definition
| APPROXIMATELY 93 PERCENT IRON 3 TO 5 PERCENT CARBON AND VARYING AMOUNTS OF IMPURITIES |
|
|
Term
| HOW IS CAST IRON PRODUCED |
|
Definition
| BY REMELTING A CHARGE OF PIG IRON AND SCRAP IRON IN A FURNACE AND REMOVING SOME OF THE IMPURITIES FROM THE MOLTEN METALS BY USING VARIOUS FLUXING AGENTS |
|
|
Term
| WHAT DOES THE QUALITY OF CAST IRON DEPEND UPON |
|
Definition
| THE EXTENT OF REFINING THE AMOUNT OF SCRAP IRON USED AND THE METHOD OF CASTING AND COOLING THE MOLTEN METAL WHEN IT SI DRAWN FROM THE FURNACE |
|
|
Term
|
Definition
| A HIGHLY REFINED PURE IRON THAT CONTAINS UNIFORMLY DISTRIBUTED PARTICLES OF SLAG |
|
|
Term
| HOW IS PIG IRON CONVERTED INTO STEEL |
|
Definition
| BY A PROCESS THAT SEPARATES AND REMOVES IMPURITIES FROM THE MOLTEN IRON BY USE OF VARIOUS CATALYTIC AGENTS AND EXTREMELY HIGH TEMPERATURES |
|
|
Term
| WHAT ARE PLAIN STEELS THAT HAVE SMALL ADDITIONS OF SULFUR (AND SOMETIMES PHOSPHOROUS)? |
|
Definition
|
|
Term
| WHAT TYPE OF STEEL ARE HEAT TREATED MACHINERY PARTS MADE OF |
|
Definition
|
|
Term
| HOW IS HIGH CARBON STEEL (.60 TO 1.50 PERCENT CARBON) USED? |
|
Definition
| FOR MANY MACHINE PARTS HANDTOOLS AND CUTTING TOOLS |
|
|
Term
| WHAT IS HIGH CARBON STEEL USUALLY CALLED |
|
Definition
|
|
Term
| WHEN DO YOU NOT USE CUTTING TOOLS OF HIGH CARBON STEEL |
|
Definition
| WHEN CUTTING TEMPERATURE WILL EXCEED 400 DEGREES F. |
|
|
Term
| WHAT IS THE RESULTING METAL CALLED WHEN OTHER ELEMENTS ARE ADDED TO IRON DURING THE REFINING PROCESS |
|
Definition
|
|
Term
| WHY IS CHROMIUM ADDED TO STEEL |
|
Definition
| TO INCREASE HARDENABILITY CORROSION RESISTANCE TOUGHNESS AND WEAR RESISTANCE |
|
|
Term
| WHAT ARE THE MOST COMMON USES OF CHROMIUM |
|
Definition
| IN CORROSION RESISTANT STEEL (COMMONLY CALLED STAINLESS STEEL) AND HIGH SPEED CUTTING TOOL |
|
|
Term
| HOW IS STAINLESS STEEL OFTEN USED |
|
Definition
| TO MANUFACTURE PARTS THAT ARE USED IN ACIDS AND SALTWATER |
|
|
Term
| WHY IS VANADIUM ADDED IN SMALL QUANTITIES TO STEEL |
|
Definition
| TO INCREASE TENSILE STRENGTH TOUGHNESS AND WEAR RESISTANCE |
|
|
Term
|
Definition
| FOR CRANKSHAFTS AXLES PISTON RODS SPRINGS AND OTHER PARTS WHERE HIGH STRENGTH AND FATIGUE RESISTANCE |
|
|
Term
| WHY ARE GREATER AMOUNTS OF VANADIUM ADDED TO HIGH SPEED STEEL CUTTING TOOLS |
|
Definition
| TO PREVENT TEMPERING OF THEIR CUTTING EDGES DURING HIGH TEMPERATURES |
|
|
Term
| WHY IS NICKEL ADDED TO STEEL |
|
Definition
| TO INCREASE CORROSION RESISTANCE STRENGTH TOUGHNESS AND WEAR RESISTANCE |
|
|
Term
| WHY IS NICKEL USED IN SMALL AMOUNTS IN THE STEEL USED TO ARMOR PLATE A SHIP |
|
Definition
| BECAUSE IT RESITS CRACKING WHEN PENETRATED |
|
|
Term
| WHY IS MOLYBDENUM ADDED TO STEEL |
|
Definition
| TO INCREASE TOUGHNESS HARDEN ABILITY SHOCK RESISTANCE AND RESISTANCE TO SOFTENING AT HIGH TEMPERATURE |
|
|
Term
| HOW IS MOLYBDENUM STEEL USED |
|
Definition
| FOR TRANSMISSION GEARS HEAVY DUTY SHAFTS AND SPRINGS |
|
|
Term
| WHAT ARE TWO ALLOY STEELS WITH MOLYBDENUM ADDED THAT ARE WIDELY USED IN HIGH TEMPERATURE PIPING IN SYSTEMS IN NAVY SHIPS |
|
Definition
| CARBON MOLYBDENUM AND CHROME MOLYBDENUM |
|
|
Term
| WHERE IS TUNGSTEN PRIMARILY USED |
|
Definition
| IN HIGH SPEED STEEL OR CEMENTED CARBIDE CUTTING TOOLS |
|
|
Term
| WHAT IS BRASS AN ALLOY OF |
|
Definition
|
|
Term
| HOW IS BRASS USED BY THE NAVY CLASSIFIED |
|
Definition
| AS EITHER LEADED OR UNLEADED MEANING THAT SMALL AMOUNTS OF LEAD MAY OR MAY NOT BE USED IN THE COPPER ZINC MIXTURE |
|
|
Term
| WHAT DOES GUN METAL A COPPER TIN ALLOY CONTAIN |
|
Definition
| APPROXIMATELY 86-89 PERCENT COPPER 7 1/2 -9 PERCENT TIN, 3-5 PERCENT ZINC, .3 PERCENT LEAD, .15 PERCENT IRON, .05 PERCENT PHOSPHOROUS, AND 1 PERCENT NICKEL |
|
|
Term
| WHAT IS GUNMETAL BRONZE USED FOR |
|
Definition
| BEARING BUSHING PUMP BODIES VALVES IMPELLERS AND GEARS |
|
|
Term
| WHAT IS ALUMINUM BRONZE MADE OF |
|
Definition
| 86 PERCENT COPPER, 8 1/2 -9 PERCENT ALUMINUM, 2 1/2-4 PERCENT IRON, AND 1 PERCENT OF MISCELLANEOUS |
|
|
Term
| WHAT IS ALUMINUM BRONZE USED FOR |
|
Definition
| VALVE SEATS AND STEMS BEARINGS GEARS PROPELLERS AND MARINE HARDWARE |
|
|
Term
| WHAT IS COPPER NICKEL ALLOY USED EXTENSIVELY ABOARD SHIP |
|
Definition
| BECAUSE OF ITS HIGH RESISTANCE TO SALTWATER CORROSION |
|
|
Term
| WHERE IS COPPER NICKEL ALLOY USED |
|
Definition
|
|
Term
| WHAT MAY COPPER NICKEL ALLOY CONTAIN |
|
Definition
| WITHER 70 PERCENT COPPER AND 30 PERCENT NICKEL OR 90 PERCENT COPPER AND 10 PERCENT NICKEL |
|
|
Term
|
Definition
| A HARD MALLEABLE AND DUCTILE METAL |
|
|
Term
| WHY IS NICKEL OFTEN USED AS A COATING ON OTHER METALS |
|
Definition
| BECAUSE IT IS RESISTANT TO CORROSION |
|
|
Term
| WHAT ALLOY ARE STRONGER AND HARDER THAN EITHER NICKEL OR COPPER |
|
Definition
|
|
Term
| WHAT IS PROBABLY THE BEST KNOWN NICKEL COPPER ALLOY |
|
Definition
|
|
Term
|
Definition
| APPROXIMATELY 65 PERCENT NICKEL, 30 PERCENT COPPER, AND SMALL PERCENTAGE OF IRON, MAGNESIUM, SILICON, AND COBALT |
|
|
Term
|
Definition
| FOR PUMP SHAFTS AND INTERNAL PARTS VALVE SEATS AND STEMS AND MANY OTHER APPLICATIONS REQUIRING BOTH STRENGTH AND CORROSION RESISTANCE |
|
|
Term
| WHY IS K-MONEL USED FOR THE SHAFT SLEEVES ON MANY PUMPS |
|
Definition
| BECAUSE OF ITS RESISTANCE TO THE HEATING AND RUBBING ACTION OF THE PACKING |
|
|
Term
| WHY IS ALUMINUM BEING USED MORE AND MORE IN SHIP CONSTUCTION |
|
Definition
| BECAUSE OF LIGHT WEIGHT, EASY WORKABILITY, AND GOOD APPEARANCE |
|
|
Term
| WHY IS ZINC USED AS A PROTECTIVE COATING FOR LESS CORROSION RESISTANT METALS PRINCIPALLY IRON AND STEEL |
|
Definition
| BECAUSE OF ITS RESISTANCE TO CORROSION |
|
|
Term
|
Definition
| TO PROTECT THE HULLS OF STEEL SHIPS AGAINST ELECTROLYSIS BETWEEN DISSIMILAR METALS CAUSED BY ELECTRIC CURRENTS SET UP BY SALT WATER |
|
|
Term
| WHAT IS ONE OF THE NAVYS MAIN USES OF TIN |
|
Definition
|
|
Term
| WHAT IS PROBABLY THE HEAVIEST METAL WITH WHICH YOU WILL WORK |
|
Definition
|
|
Term
| WHAT IS ONE OF THE MOST COMMON USES OF LEAD |
|
Definition
| AN ALLOYING ELEMENT IN SOFT SOLDER |
|
|
Term
| WHAT PROVIDES A CLEAR AND EASILY UNDERSTOOD CROSS REFERENCE FROM THE DESIGNATION OF ONE NUMBERING SYSTEM TO OTHER SYSTEMS WHERE A SIMILAR METAL IS INVOLVED |
|
Definition
| THE UNIFIED NUMBERING SYSTEM FOR METALS AND ALLOYS WHICH IS PUBLISHED BY THE SOCIETY OF AUTOMOTIVE ENGINEERS INC (SAE) |
|
|
Term
| WHAT ARE THE TWO MAJOR SYSTEMS USED FOR IRON AND STEEL |
|
Definition
| THE SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) AND THE AMERICAN IRON AND STEEL INSTITUTE (AISI) |
|
|
Term
| WHAT IS THE METHOD USED FOR ALUMINUM |
|
Definition
| THE ALUMINUM ASSOCIATION METHOD |
|
|
Term
| WHAT SYSTEM SHOULD YOU BE FAMILIAR WITH OF STEEL CLASSIFICATIONS |
|
Definition
|
|
Term
| WHAT DO THE SAE AND AISI SYSTEM, WHICH ARE IN COMMON USE, HAVE THAT INDICATES THE COMPOSITION OF THE STEEL |
|
Definition
| A FOUR OR FIVE DIGIT NUMBER |
|
|
Term
| WHAT IS THE MAJOR DIFFERENCE BETWEEN THE SAE AND AISI SYSTEM |
|
Definition
| THE AISI SYSTEM NORMALLY USES A LETTER BEFORE THE NUMBERS TO SHOW THE PROCESS USED TO MAKE THE STEEL, AND THE SAE SYTEM DOES NOT |
|
|
Term
| WHAT ARE THE LETTERS THAT ARE USED BY THE AISI SYSTEMS |
|
Definition
| B ACID BESSEMER CARBON STEEL; C BASIC OPEN HEARTH OR BASIC ELECTRIC FURNACE CARBON STEEL;AND E ELECTRIC FURNACE ALLOY STEEL |
|
|
Term
| WHAT DOES THE FIRST DIGIT OF THE SAE NUMBER NORMALLY INDICATE |
|
Definition
|
|
Term
| WHAT DOES THE SECOND DIGIT OF THE SAE NUMBER NORMALLY INDICATE |
|
Definition
| A SERIES WITHIN THE GROUP (SERIES MEANS A PERCENTAGE OF ALLOY MEDALS) |
|
|
Term
| WHAT DO THE THIRD, FOURTH AND FIFTH DIGITS OF SAE NUMBERS INDICATE |
|
Definition
| THE AVERAGE CARBON CONTENT OF THE STEEL |
|
|
Term
| HOW DO NAVY BLUE PRINTS AND DRAWING OF EQUIPMENT FURNISHED IN THE MANUFACTURER TECHNICAL MANUALS USUALLY SPECIFY MATERIALS |
|
Definition
| BY FEDERAL OR MILITARY SPECIFICATION NUMBERS |
|
|
Term
| WHAT IS A VERY USEFUL BOOK TO USE WHEN CROSS REFERENCING NUMBERS |
|
Definition
| UNIFIED NUMBERING SYSTEM FOR METALS ALLOYS |
|
|
Term
| HOW ARE NONFERROUS METALS GENERALLY GROUPED |
|
Definition
| ACCORDING TO THEIR ALLOYING ELEMENTS |
|
|
Term
| HOW ARE SPECIFIC DESIGNATIONS OF AN ALLOY DESCRIBED |
|
Definition
| BY THE AMOUNTS AND CHEMICAL SYMBOLS OF THE ALLOYING ELEMENTS |
|
|
Term
| WHAT DOES THE ALUMINUM ASSOCIATION USE FOR DESCRIBING STEELS |
|
Definition
| FOUR DIGIT DESIGNATION SYSTEM SIMILAR TO THE SAE/AISI SYSTEM |
|
|
Term
| WHAT DOES THE FIRST DIGIT OF THE SLUMINUM AND ALLOY CLASSIFICATION NUMBER IDENTIFY |
|
Definition
|
|
Term
| WHAT DOES THE SECOND DIGIT OF THE ALUMINUM AND ALLOY CLASSIFICATION NUMBER INDICATE |
|
Definition
| ALLOY MODIFICATION OR IMPURITY LIMITS |
|
|
Term
| WHAT DO THE LAST DIGITS OF THE ALUMINUM AND ALLOY CLASSIFICATIONS NUMBER IDENTIFY |
|
Definition
| THE PARTICULAR ALLOY OR INDICATES THE ALUMINUM PURITY |
|
|
Term
| HOW ARE METALS USED BY THE NAVY USUALLY MARKED |
|
Definition
| BY THE PRODUCER WITH THE CONTINUOUS IDENTIFICATION MARKING SYSTEMS |
|
|
Term
| WHAT IS THE CONTINUOUS IDENTIFICATION MARKING SYSTEM WHICH IS DESCRIBED IN FEDERAL STANDARDS |
|
Definition
| A MEANS FOR POSITIVE IDENTIFICATION OF METALS PRODUCTS EVEN AFTER SOME PORTIONS HAVE BEEN USED |
|
|
Term
| WHAT MUST THE CONTINOUS IDENTIFICATION MARKING INCLUDE FOR METAL PRODUCTS |
|
Definition
| 1 THE PRODUCERS NAME OR REGISTERED TRADEMARK AND 2 THE COMMERCIAL DESIGNATION OF THE MATERIAL |
|
|
Term
| WHAT IS THE INFORMATION INCLUDED IN THE COMMERCIAL DESIGNATION |
|
Definition
| A MATERIAL DESIGNATION SUCH AS AN SAE NUMBER AN AISI NUMBER OR AN ASTM (AMERICAN SOCIETY OF TESTING MATERIALS) SPECIFICATION 2A PHYSICAL CONDITION AND QUALITY DESIGNATION THAT IS THE DESIGNATION OF TEMPER OR OTHER PHYSICAL CONDITION APPROVED BY A NATIONALLY RECOGNIZED TECHNICAL SOCIETY OR INDUSTRIAL ASSOCIATION SUCH AS THE AMERICAN IRON AND STEEL INSTITUTE |
|
|
Term
|
Definition
| THE IDENTIFICATION OF A METAL BY OBSERVING THE COLOR SIZE AND SHAPE OF THE SPARK STREAM GIVEN OFF WHEN YOU HOLD THE METAL AGAINST A GRINDING WHEEL |
|
|
Term
| WHAT IS GENERALLY SPEAKING A SUITABLE GRINDING WHEEL FOR SPARK TESTING |
|
Definition
| AN 8-INCH GRINDER WHEEL OF 30 TO 60 GRAINS TURNING AT 3600 RPM THIS PROVIDES A SURFACE SPEED OF 7537 FEET PER MINUTE |
|
|
Term
| WHY ARE STEELS WITH THE SAME CARBON CONTENT BUT DIFFERENT ALLOYING ELEMENTS NOT ALWAYS EASILY IDENTIFIED |
|
Definition
| BECAUSE ALLOYING ELEMENTS AFFECT THE CARRIER LINES THE BURST OR THE FORMS OF CHARACTERISTIC BURST IN THE SPARK PICTURE |
|
|
Term
| HOW CAN THE NICKEL SPARK BE IDENTIFIED |
|
Definition
| BY TINY BLOCKS OF BRILLIANT WHITE LIGHT |
|
|
Term
| WHAT ARE THE CHARACTERISTICS OF THE LOW CARBON STEEL SPARK STREAM |
|
Definition
| IT IS ABOUT 70 INCHES LONG AND THE VOLUME IS MODERATELY LARGE THE FEW SPARKLERS THAT MAY OCCUR ARE FORKED |
|
|
Term
| WHAT ARE THE CHARACTERISTICS OF HIGH CARBON STEEL SPARK STREAM |
|
Definition
| IT IS ABOUT 55 INCHES LONG AND LARGE IN VOLUME THE SPARKLERS ARE SMALL AND REPEATING AND SOME OF THE SHAFT MAY BE FORKED |
|
|
Term
| WHAT TYPE OF SPARK STREAM DOES THE WHITE CAST IRON PRODUCE |
|
Definition
| A STREAM ABOUT 20 INCHES LONG THE VOLUME OF SPARKS IS SMALL WITH MANY SMALL REPEATING SPARKLERS THE COLOR OF THE SPARK STREAM CLOSE TO THE WHEEL IS RED WHILE THE OUTER END OF THE STREAM IS STRAW COLORED |
|
|
Term
| what type of spark stream does the gray cast iron produce |
|
Definition
| a spark stream about 25 inch long which is small in volume with fewer sparklers than white cast iron and sparklers are small and repeating |
|
|
Term
| what are the characteristics of the spark stream that the malleable iron spark test produce |
|
Definition
| its cabout 30 in long it is of moderate volume with many small repeating sparklers toward the end of the stream |
|
|
Term
| what are the characteristics of the spark stream that the wrought iron spark test produce |
|
Definition
| its about 65 in long it has large volume with few sparklers the sparklers show up toward the end of the stream and are forked |
|
|
Term
| what type of spark stream does the stainless steel spark test produce |
|
Definition
| a spark stream about 50 in long of moderate volume and with few sparkler the sparklers are forked |
|
|
Term
| what are the characteristics of the spark stream that nickel iron spark test produce |
|
Definition
| it is only about 10 in long it is small in volume and orange in color |
|
|
Term
| what test is the most common and easiest test used in the navy today when you need to identify metal quickly |
|
Definition
| the nitric acid test but you can use it only in non critical situations |
|
|
Term
| what is indicated if there is no reaction at all after performing the nitric acid test |
|
Definition
| the test material may be one of the stainless steels |
|
|
Term
| what does a reaction that produces a brown colored liquid indicate in the nitric acid test |
|
Definition
|
|
Term
| what does a reaction that produces a brown to black color indicate in the nitric acid test |
|
Definition
| a gray cast iron or one of the alloy with its principle element either chromium molybdenum or vanadium |
|
|
Term
| how does nickel steel react to the acid test |
|
Definition
| by forming a brown to greenish black liquid |
|
|
Term
| what color does nickel reaction to nitric acid develop |
|
Definition
|
|
Term
| how does tin bronze aluminum bronze and copper all react to the nitric acid test |
|
Definition
| vigorously and the liquid changes to a blue green color |
|
|
Term
| what type of laboratory do all large repair ships have which will help you identify various metals in more critical situations or when you need agreater accuracy on a repair job |
|
Definition
| a non destructive test (NDT) laboratory |
|
|
Term
| why are plastic materials being used increasingly aboard ship and tend to surpass structural metals |
|
Definition
| because they are shock resistant |
|
|
Term
| what are the two major divisions of plastic materials |
|
Definition
| thermosettings and thermoplastics |
|
|
Term
| what are the characteristics of thermosettings |
|
Definition
| they become soft and pliable |
|
|
Term
| how are laminated plastics made |
|
Definition
| by dipping spraying or brushing flat sheet or continuous rolls of paper fabric or wood veneer with resins and the pressing several layers together to get hard rigid structural material |
|
|
Term
| how are plastics identified |
|
Definition
| by several commercial designations by trade names and by military and federal specifications |
|
|
Term
| what are the types of saws used to cut blanks from plastic stock |
|
Definition
| band saw jigsaw and circular saw |
|
|
Term
| what is the recommended cutting speed for both thermosetting and thermoplastic |
|
Definition
| 200 to 500 fpm with high speed steel tools and 500 to 1500 fpm with carbide tipped tools |
|
|
