hmm qc project
TRANSCRIPT
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HOT METAL MANAGEMENT
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Design & fabrication of hydraulic bearing housing puller/pusher.
TEAM LEADER : Mr. RANA DHAVALTEAM MEMBERS : Mr. ANKIT PRAJAPATHI
Mr. ANANTH PATEL
Mr. MANJUNATH H
Mr. SATYAM PRUCHAK
FACILITATOR : Mr. B V REDDY
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• We are facilitated with ladle car for hot metal transportation. Each having capacity of 140 T consisting of two bogie assembly and each assembly have two numbers of wheel and axle set.
• Each wheel and axle having two bearing houses with Bearing(22336cck/cc3-Double spherical roller bearing).
• We have to remove bearing housing in cases of bearing damage and repair of wheel & axle sets.
Measure Analyze Control`DEFINE ImproveDEFINE
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• Initially we used manual method of bearing housing removal which results in more time consuming and chances of bearing damage due to improper bearing mounting
• Improper bearing mounting also cause failure of bearing components Like adaptor sleeve, Checknut bolts etc.
Measure Analyze Control`DEFINE ImproveDEFINE
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During hot metal ladle car maintenance work ,following damages or repair handled due to improper bearing housing seating•Sleeve damage :
•Overheating of bearing
•Check nut bolt damage
•Axle thread damage
•Bearing housing cover damage.
Analyze Control`ImproveDefine Measure
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Trend before project
Analyze Control`ImproveDefine Measure
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Why –Why analysis ?
Q1 . Why sleeve damage happened?
Ans : Sleeve damage occurred due to improper bearing mounting in bearing axle box.
Q2 :Why Check nut bolts broken ?
Ans : Check nut bolts are broken due to improper fitment of sleeve.
Q3 :Why axle housing front cover rubbing ?
Ans : Due to improper seating of sleeve.
All problem root cause is because of improper mounting of bearing housing box in wheel & axle set .
Analyze ImproveDefine Measure Control`
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We have designed & fabricated hydraulic bearing housing puller & pusher for easy installing & removing of bearing housing assembly from wheel & axle set in which we are using 100 ton lukas make hydraulic jack.
Analyze ImproveDefine Measure Control`
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Trend after project
ImproveAnalyzeDefine Measure Control`
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ControlAnalyzeDefine Measure Improve
• We have revised maintenance SOP to usage of hydraulic bearing housing puller & pusher
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Benefits:
• Reduce material consumption like sleeve, check nut bolts, grease ,etc.
• Breakdown time of hot metal ladle car reduce which will results 100 % avaibility of ladle cars.
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Queries …?