BSC TOOLS Co.,Ltd
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  • The importance of blade cooling water part 2
  • If we assume an ideal volume of water for a 350mm (14”) blade is
    approximately  14 l.p.m. (3 g.p.m.) for cured concrete, how can we find out
    if the plumbing will deliver this volume to the blade and effectively get

    into the cut?


    The simplest way is to connect the hose to the water supply and raise
    the saw until you can get a water container under the blade guard.Turn on the
    water and see what volume of water is collected by the container in a minute.
    If at least 4-5 gallons a minute are not being collected you may be  underwatering

    and reducing blade life.


    The rule of thumb is set up the plumbing to deliver more than you want, and
    control delivery with a valve. This will help when you want longer life.

    A flow  meter  is also handy here.


    Having got the water delivery right, by using larger bore hoses (3/4”), and or
    larger bore plumbing, how can it best be delivered to get the water

    in the cut?


    At normal blade speeds, an air barrier forms at about 1/2 way between the
    flanges and the cutting edge. To get the water to stick to the blade this air
    barrier must be broken by water pressure or the water must be delivered

    where there is no barrier.


    A simple method is to train the water outlets on the blade near the flanges.
    Here there is no barrier. The water will, tend to stick to the blade and more

    water will come out of the cut than with many other systems.


    It is difficult to assess the water volume in the cut but it can be
    estimated fairly well. A way of finding out if the water is about right, is to test
    the temperature of the water escaping from the cut. Cold water would indicate
    a volume which is too high for cured concrete,  tepid water is about right.

    BSC TOOLS CO.,LTD
    www.diamondtoolchina.com
    e-mail:bsctools@yeah.net
    MSN:bsctools@hotmail.com
    Skype:bsctools
    Attn:Nicholas-Chen




  •    2013/9/10
  • Add：Jinzhou Road,Fengzhou Town,Quanzhou city,Fujian Province,China
  • Tel：0086-595-85116992 Fax：0086-595-85116992