pipeline component parts:
Slurry pump is widely used in water conservancy, power, coal, metallurgy, transportation and other industries,Do the transport of solid liquid mixing
materials such as sediment,slag,concentrate and tailings.Flow passage components is the main wearing parts,they not only should bear the erosive wear
of materials in the process of running,but also should bear the corrosion effect of cavitation damage and sizing agent,causes excessive consumption of
materials,lead to the service life is shortened,affected the equipment normal operation and the safety in production at the same time,also waste a lot of manpower,material resources and financial resources,increases the maintenance costs,reduce the production efficiency and economic benefits.
How to do wear resistant repairing and protection well before wear-out failure of slurry pump flow passage components,prolong service life,reduce production
loss is the key problem,BD7045 slurry pump abrasion resistant repair epoxy coating is the macromolecule high performance wear resistant,corrosion resistant polymeric ceramic material which compounded by high performance NDI-PTMG modified epoxy resin and abrasion wearing resistant aggregate from the
core technology of Xiangyang City Hundred Shield Coating Material Co.,Ltd.Used in repairing the mining use slurry pump which suffers from serious erosive
wear,the restored life of repairing workpiece full size generally can reach to 1.5 times more than new workpiece service life.
Construction case: in June 2017,a company from Handan city entrusted Xiangyang City Hundred Shield Coating Material Co.,Ltd to use BD7045 high
strength slurry pump wear resistant coating to repair the used scrapped slurry pump volute and piping components (as the below photo),because this volute
doesn’t do the protection processing,not only have a penetrating hole,but also it is placed for a long time with serious corrosion,piping components is also rusty,obviously,there is no plan to do repairing treatment and put into production applications,through the meticulous surface treatment from Xiangyang City
Hundred Shield Coating Material Co.,Ltd,sizing and curing construction repairing,this batch of flow passage components can be recharged with its own mission,According to the old slurry pump repairing feedback information,this batch of rebuilt parts service life will also be the same as the new workpiece,
which can be fully applied to the production operation for one cycle.
Construction process steps:
1.Surface treatment: Do coarsening treatment on the pending-repair area,grinding with angle grinder or sand blasting etc,the surface after coarsening treatment
should be cleaned,the surface after this treatment should be the one coarsening,dry and fresh substrates,should be no greasy dirt and dust.(Make the special
wear resistant prime coat BD4261 mix uniformly according to the specified ratio,then brush coating it on the surface of the metal substrates,after that waiting
for the prime coat initial curing)
2.Make the A and B two components of BD7045 slurry pump wearing resistant repair compound epoxy coating mix uniformly according to the specified
ratio A:B=4:1(mixing weight ratio),then use it up within 30 min.Generally while it’s construction and configuring adhesives,every time the largest configuring
quantity should not be more than 2Kg,too much adhesive is solidified too fast,hasn’t been used up until partial adhesive has been solidified and can’t be used.
If the temperature is low,you can properly heat up the A component to reduce the viscosity for easy to configure.
3.Coating:when the prime coat just initial curing,make the well mixed materials be coating on the pending-repair area layer by layer,the coating should be compacted,the suitable coating thickness is 4-10mm,the most thickness can be 30mm,repair the surface to be smooth after the coating coat in the suitable
size,this material can’t do machining,should pay attention to controlling the coating thickness to avoid appearing interference phenomenon in the assembly.
4.Curing:It can be put into using after curing for 24 hours at the temperature of 25 degree,(If you can heat it up to the temperature of 60-80 degree and
keep this temperature for 2 hours, in this way,can improve 30% comprehensive performance) If the temperature is below 5 degree,should heat it up or
prolong curing time to promote the curing.General construction in winter,you can use the iodine tungsten lamp to do irradiation heating with 40cm distance
from the coating.
The equipment construction photos before repairing and after repairing:
