Flange Forging
at low temperature forging changes in size is very small at 700 ℃
forging oxide scale and the formation of less surface decarburization
phenomenon. So as long as the deformation in the forming range of cold forging
easy to get a good dimensional accuracy and surface finish, as long as the
control of temperature and lubrication cooling 700 ℃ the
following warm forging can also get very good accuracy. Forging deformation due
to deformation and deformation resistance can be very small forging complex
shape of the large forgings, to get high dimensional accuracy of forgings in
the 900-1000 ℃ temperature field with hot forging
processing, the other should pay attention to improving the working environment
forging hot forging The die life is shorter compared to forging in other
temperature domains but its freedom is large and low.
2016年12月26日星期一
steel elbow
Carbon steel elbow forming
process is the use of special elbow push machine, mandrel and heating device,
in order to achieve set in the blank on the die in the pushing machine driven forward,
in the movement was heated, diameter and bending Forming process.
seamless tube
Q345A
seamless tube grade, is not to do the impact. Q345B level, is the impact of 20
degrees at room temperature. Q345C level, is the impact of 0 degrees. Q345D
level, is -20 degrees shock. Q345E level, is -40 degrees shock. At different
impact temperatures, the values of the impact are also different. Q The yield
strength is not less than 345Mp The quality grade indicates the amount of
impurity elements
2016年12月22日星期四
flanges
Using the
plate directly cut out the flange mould. Then the flanges processing is volume
of the inner and outer diameter and thickness of the disc, and then bolt holes
and waterline processing. This produced the flange is called cutting flange,
the maximum diameter of such flange is limited by the width of steel plate.
steel shot
Stock of steel shot
Recently because
the coking coal prices keeping up. We had decided to increase the stock rate up
to 80% so that to control the lower prices. In this way, we can keep our price
competitive. We had in been steel shot for many years. The prices from us is
stable and the quality is always as your expected. Your can learn more from
your trial order. Hope we will be your sole supplier in the future.
Carbon steel elbow
Carbon steel elbow’s weight normally are give by factory. As
a buyer how we know the weight of the elbows if the factory didn’t mention it?
There have a computational formula for you. Hope it is helpful. OD means
outside diameter of the elbow. T means the thickness of the elbow. R means the
bending radius. The following method we can know the general weight of a elbow.
Of course the best way is weight directly.
2016年12月21日星期三
Carbon steel reducer
Carbonsteel reducer have two types: Concentric reducer and eccentric reducer. The
reducer producing tech have three forms. Pressing, Hot expanding, pressing and
expanding.
The
reducer carbon steel material there have ASTM/ASME A234 WPB、WPC
etc. The stainless steel there have :ASTM/ASME A403 WP 304-304L-304H-304LN-304N ASTM/ASME
A403 WP 316-316L-316H-316LN-316N-316Ti etc.
And low temperature steel ASTM WPL6.
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