Troubleshooting
FLASHING FINNING
EXCEEDED RECOMMENDED
WATER / POWDER RATIO
WATER / POWDER RATIO
REDUCE WATER TO
WITHIN RECOMMEND
RANGE (38 – 40/100)
WITHIN RECOMMEND
RANGE (38 – 40/100)
NOT MIXED LONG ENOUGH
HAND MIXING – MIX 3 MIN.
MECHANICAL – MIX 3 - 4 MIN.
MECHANICAL – MIX 3 - 4 MIN.
METAL AND, OR FLASK TEMP
TOO HOT
TOO HOT
REDUCE METAL AND, OR
FLASK TEMPERATURES
FLASK TEMPERATURES
CURE TIME NOT LONG
ENOUGH AFTER SET
ENOUGH AFTER SET
LEAVE FLASK UNDISTURBED
1 – 2 HOURS BEFORE
STARTING BURNOUT
1 – 2 HOURS BEFORE
STARTING BURNOUT
INVESTMENT PROCESSED PAST
AVAILABLE WORKING TIME
AVAILABLE WORKING TIME
PROCESS NOT LONGER
THAN 8 – 9 MIN.
THAN 8 – 9 MIN.
MOLD HEATED TOO QUICKLY
WATER / POWDER RATIO
WATER / POWDER RATIO
SLOW DOWN RATE OF
TEMPERATURE RISE
TEMPERATURE RISE
EXPIRED INVESTMENT
IMPROPER STORAGE
IMPROPER STORAGE
USE FRESH POWDER
WITHIN RECOMMEND
STORE IN COOL, DRY AREA
WITHIN RECOMMEND
STORE IN COOL, DRY AREA
AIR BUBBLES
WATER RATIO TOO LOW
ADJUST W/P RATIO TO: 38/100- VACUUM MIXING -40/100- HAND,
MECHANICAL MIXING
MECHANICAL MIXING
NOT MIXED LONG ENOUGH
WATER / POWDER RATIO
WATER / POWDER RATIO
DO NOT MIX LESS THAN
2.5 - 3 MINUTES
2.5 - 3 MINUTES
INVESTING CYCLE TOO LONG
FOLLOW INSTRUCTIONS
DO NOT PROCESS PAST
9 MINUTES
DO NOT PROCESS PAST
9 MINUTES
NON-FILLS
METAL &, OR FLASK TEMP.
TOO COLD
TOO COLD
ADUST METAL AND OR, FLASK
TEMP. HIGHER
TEMP. HIGHER
NON-FILLS, Cont.
FLASK TEMP. TOO LOW
RAISE FURNACE TEMP. UNTIL
COMPLETE FILLS ARE ACHIEVED
COMPLETE FILLS ARE ACHIEVED
NOT ENOUGHE G-FORCE
(Casting with Centrifuge)
(Casting with Centrifuge)
ADJUST CENTRIFUGE TO
INCREASE G-FORCE
INCREASE G-FORCE
INSUFFICIENT VACUUM PRESSURE
/ LEAK IN VACUUM SYSTEM
/ LEAK IN VACUUM SYSTEM
ADJUST VACUUM
REPAIR LEAK IN SYSTEM
REPAIR LEAK IN SYSTEM
INCOMPLETE BURNOUT – TOO MUCH
CARBON PRESENT IN MOLD CAVITY
CARBON PRESENT IN MOLD CAVITY
INCREASE TIME AT PEAK TEMP.
UNTIL MOLD CAVITY IS WHITE
UNTIL MOLD CAVITY IS WHITE
SHRINKAGE POROSITY
PATTERNS TOO CLOSE TO
POUR BUTTON
POUR BUTTON
LEAVE MORE SPACE BETWEEN
BOTTOM ROW AND BUTTON
BOTTOM ROW AND BUTTON
FLASK TEMP. TOO HIGH
REDUCE FLASK TEMPERATURE
SPRUED IMPROPERLY
SPRUE TO THICKER SECTION
OF DESIGN
OF DESIGN
SPRUING TOO SMALL
SPRUE TO HEAVIEST SECTION
OF DESIGN. USE LARGER GATE
OF DESIGN. USE LARGER GATE
GAS POROSITY
CONTAMINATED METAL
CLEAN METAL OF INVESTMENT, ETC.
FLASK TEMP. TOO HOT
REDUCE FLASK TEMPERATUR
INCOMPLETE BURNOUT
HOLD LONGER AT PEAK TEMP.
METAL REUSED TOO MANY TIMES
USE NEW, UNUSED METAL, OR
MIX NEW METAL WITH REMELT
MIX NEW METAL WITH REMELT
INVESTMENT RESIDUE STICKS TO CASTINGS
METAL OVERHEATED
REDUCE METAL TEMPERATURE
CASTING INCLUSIONS
CRUCIBLE OLD, DETERIORATED
METAL OXIDES
METAL OXIDES
REPLACE WITH NEW CRUCIBLE
REFINE METAL
REFINE METAL
CASTING INCLUSIONS, Cont.
SHARP CORNERS BREAKING OFF
INCREASE MOLD STRENGTH
MODIFY DESIGN
MODIFY DESIGN
ROUGH CASTING SURFACE
TOO MUCH WATER USED
TO MIX
TO MIX
DO NOT EXCEED 40% WATER
FOR MIXING.
FOR MIXING.
ROUGH MODEL SURFACE
POLISH MASTER MODEL &
REMAKE RUBBER MOLD
REMAKE RUBBER MOLD
TOO MUCH SILICONE. OR
TALC MOLD RELEASE
TALC MOLD RELEASE
CLEAN MOLD AND REDUCE
SILICONE, OR TALC USED
SILICONE, OR TALC USED
FLASK TOO HOT
REDUCE FLASK TEMP.
METAL TOO HOT
REDUCE METAL TEMP.
EXCESS STEAM DE-WAX
REDUCE TIME IN STEAM TO
LESS THAN ONE HOUR
LESS THAN ONE HOUR
FLASK NOT CURED LONG
ENOUGH BEFORE BURNOUT
ENOUGH BEFORE BURNOUT
CURE MOLD A MINIMUM
OF 1- 2 HOURS
OF 1- 2 HOURS
DARK, OXIDISED CASTINGS
PEAK BURNOUT TEMP.
EXCEEDED
EXCEEDED
DO NOT EXCEED 750C.
METAL SPENT, REUSED TOO
MANY TIMES
MANY TIMES
REFINE, USE FRESH METAL
METAL OVERHEATED
USE CORRECT TEMP.
FOR CASTING
FOR CASTING