Driving a sedentary most hurts

Driving a sedentary most hurts Nowadays, cars are gradually changing our lives, but while bringing convenience to us, some unhealthy habits also unknowingly recruit us. According to research, more than 2 hours of driving, lumbar injuries have already occurred. Among them, the principle is that one does not move for a long time, the muscles of the lumbar spine are tense, and the second is the ups and downs, the bumps and vibrations, and the destruction of the intervertebral disc.

So it is recommended to have car owners:

1, a drive time should not be too long, or physical and mental fatigue, not only affect the safety of driving but also endanger the health. During the driving process, it is generally possible to park and rest every 2 hours. This can help the muscles to eliminate fatigue and provide a healing effect, thereby reducing the damage caused by the vibration. This intermittent rest can also alleviate other damages caused by noise in driving and bad weather conditions. In the face of poor road conditions, the speed can not be too fast, the operation should not be too fierce, or the car's severe bump on the lumbar spinal injury.

2. Reduce the vibration of the car, make pre-judgment and smooth driving ahead of the road conditions, which can not only improve driving safety, but also reduce the load on the waist.

"Gravity Die Casting. A permanent mould casting process, where the molten metal is poured from a vessle of ladle into the mould, and cavity fills with no force other than gravity, in a similar manner to the production of sand castings, although filling cn be controlled by tilting the die."

Gravity Die Casting

Sometimes referred to as Permanent Mould, GDC is a repeatable casting process used for non-ferrous alloy parts, typically aluminium, Zinc and Copper Base alloys.

The process differs from HPDC in that Gravity- rather than high pressure- is used to fill the mould with the liquid alloy.

GDC is suited to medium to high volumes products and typically parts are of a heavier sections than HPDC, but thinner sections than sand casting.

There are three key stages in the process.

  1. The heated mould [Die or Tool] is coated with a die release agent. The release agent spray also has a secondary function in that it aids cooling of the mould face after the previous part has been removed from the die.
  2. Molten metal is poured into channels in the tool to allow the material to fill all the extremities of the mould cavity. The metal is either hand poured using steel ladles or dosed using mechanical methods. Typically, there is a mould [down sprue" that allows the alloy to enter the mould cavity from the lower part of the die, reducing the formation of turbulence and subsequent porosity and inclusions in the finished part.
  3. Once the part has cooled sufficiently, the die is opened, either manually or utilising mechanical methods.

Advantages

  • Good dimensional accuracy
  • Smoother cast surface finish than sand casting
  • Improved mechanical properties compared to sand casting
  • Thinner walls can be cast compared to sand casting
  • Reverse draft internal pockets and forms can be cast in using preformed sand core inserts
  • Steel pins and inserts can be cast in to the part
  • Faster production times compared to other processes.
  • Once the tolling is proven, the product quality is very repeatable.
  • Outsourced Tooling setup costs can be lower than sand casting.

Gravity Casting Parts

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