aluminum wall panels Bolt Tightening Technique

by:Carlos     2019-04-04
Time and technology have changed the way many cars are combined these days,There are many new introductions, such as plastic clips,Adhesive and nylon buckle,Replace the trim nails and screws that used to hold the panel normally.When assembling mechanical components, there is still the use of bolts,But even some of them have changed.Today,At the main rally.Torque yield Bolt for engine.These bolts stretch to the yield point when tightened;When the part needs precise clamping load, bolts are often used,They can be used on connecting rods.Crankshaft main bearing cover,Cylinder head,The front engine damper, even the flywheel.The torque generation Bolt will no doubt, if the workshop manual indicates that the Bolt needs to be discarded and replaced with a new one.This can get expensive and always waste time if you have to buy new bolts all the time.Too many of these old bolts still look available, but be careful to look like they can cheat,If the old bolt is used, it can cause the engine to fail and no one wants the cost.Through the process of tightening the bolts, it pulls their elastic limit due to stretching,That's why the new needs give the greatest power to today's engines.It's easy to understand, and if you tighten the bolt, then it's harder to make it an accurate clamping load.When friction occurs, tighten the bolts, these are like a slope,This has to slide to another thread or slope in bolthole when turning.Tightening it becomes more difficult to move or push the thread ramp.The term used when fixed is sticky as opposed to friction,When the Bolt becomes tighter, it is the station that will affect the torque reading.One can use lubrication to help the thread slide easier, but the quality may vary between one lubricant and the other.It is the best type of lubricant that is easier to follow the manufacturer's guide and is needed when the bolt is tightened.This is important because it can get too tight or not tight if you use the wrong lubricant.There are several stages to follow when tightening the torque to produce the bolt, which is done using torque and corner.The first step is to tighten the bolts to low torque specifications,This is to ensure that even the clamping load is assembled in place when the part is assembled.The second stage is to tighten again slightly to the higher torque stage.This will still allow enough friction and few tightening of torque to stick on the bolt thread.The normal procedure after this is to turn each bolt too much for a specified number of degrees usually two to three steps.As an example,The bolt could turn into 90 degrees.Then add 90 degrees until further 70 degrees is enough to tighten the bolt.This will ensure that the clamping force has been applied to the bolts to be accurate, even.Use special tools to measure how much the wrench or Bolt has turned,These are low cost tractors with a movable pointer,While some tools use electronic measurements of angles, these can cost several hundred dollars.Both types work well, although the electronics one is more expensive, it can actually make the work faster.Some people may ask why the torque generation bolts need to be present?Maybe they don't need it in 1960s or 70.The answer to this question is simple because the engine material is different now.For example,The aluminum cylinder head expands different cast iron blocks.When the engine heats upAll bolts attached to the components must be able to slide on their shims or move each other.Due to the elasticity of the parts between the torque yield bolts that allow movement, but still remain even when sealing and clamping loads.Today's engine parts are much lighter than they were decades ago,Heavy-duty cast iron parts are able to take torque changes without failure.The aluminum alloy and thin-walled castings used today require accurate torque, and if this is incorrect, leakage or warping can then occur.The design of the engine is changing today, because even if the clamping force is needed,Ford, the automaker, has an original engine in which the bolt holding cylinder head can be cast into the bottom through the engine block thread, holding the crankshaft.It's hard to imagine that only a few bolts can hold a full engine together.This will definitely change the way the engine is assembled and disassembled in the future.
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