Closed steel drums have threaded plugs, while open steel drums have nuts on the drum hoops with bolts. Some factory inspectors will tighten loose plugs or bolts during regular inspections, thinking that this will prevent quality issues with steel drums. Experienced barrel makers say that it's best not to do this, because over-tightening plugs and bolts will increase the likelihood of problems.
So, what are the methods for controlling bolt tightening?
Definition: A control method that stops tightening immediately when the tightening torque reaches a set control torque.
Advantages: Simple and direct control system, easy to check tightening quality with torque sensors or high-precision torque wrenches.
Disadvantages: Low control accuracy (torque error ±25%), and it cannot fully utilize the potential of the material.
Definition: A control method that tightens the bolt to a small torque first, and then tightens it a specified angle from this point.
Advantages: High precision of axial preloading of bolts (±15%), and can obtain a large axial preloading force with a value that can be concentrated around the average.
Disadvantages: The control system is more complex, requiring measurement of both torque and angle; and the quality inspection department may not find an appropriate method to check the tightening results.
Definition: A method of stopping tightening by tightening the bolt to the yield point.
Advantages: Tightening accuracy is very high, with a preloading force error that can be controlled within ±8%, but its precision mainly depends on the yield strength of the bolt itself.
Disadvantages: The tightening process requires dynamic and continuous calculation and judgment of the slope of the torque and angle curve. The control system requires high real-time performance and computing speed.
ISDI: Precautions For Steel Drum Storage, Transportation And UseJune 30, 2022The correct storage and transportation of steel drums can help maintain the safety of employees, improve the transportation state and reduce quality problems.The transportation and hazardous materials...view
The Global Food Packaging Market Will Reach $305.9 Billion In Four YearsJuly 1, 2022Market research firm Marketsand Markets has released a report on the food packaging market, forecasting global trends between now and 2019 by material, type, and application. The report estimates that...view
Greif Successfully Developed A New Steel Drum Vertical Sealing MachineJune 30, 2022Greif recently announced the installation of a new steel drum vertical sealer at its Grand-Quevilly plant in France.Designed to maximize overall customer satisfaction, the investment will provide effi...view
Metal Packaging Has An Irreplaceable Position in The Packaging Industry With Its Excellent Performance And Superior Texture.July 1, 2022Metal packaging has an irreplaceable position in the packaging industry with its outstanding performance and superior texture.Timeshare safety: Metal packaging shows good stability, with high strength...viewFour Functions Of Bottle CapJuly 4, 2022Bottle caps, as a matching bottle, often do not pay special attention to them, but they carry many functions. Let's take a look at the important functions carried by the bottle caps, which are clo...viewNotice On The Key Work Of Brand Construction In The Packaging Industry In 2021July 1, 2022Packing Association of provinces, autonomous regions, municipalities directly under the Central Government and cities under separate state planning (Packing Association and Packing Office), China Pack...view
EN
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
