Hot-dip galvanized strip strip melting process hot-dip galvanizing strip strip melting process
Spindle assembly is a crucial part for your lawn mower cutting deck that work together with the pulleys and belts to perform clean and even mowing.
It is combined from bearings, spindle housings, spindles, tubes, dust cap, screw nuts, etc.
Which kind of spindle assembly does QFQP produce?
We produce various kinds of spindle assembly, especial for riding mower (with aluminum/ductile iron housings). All parts assembled by our experienced workers.
Where are the products sold?
Main of our customers is from USA, CANADA.
Why choose QFAP?
We have specialized in producing high precision mechanical parts more than 10years, got 6years experience on mower deck spindle assembly.
All of our cooperators are large bearing companies, mower companies or agricultural equipment companies, most of our products are shipped to North America and Europe.
Because of the long term cooperation, we could supply our customers not only the products but also our recommendation on the designs to saving costs.
To meet your demand, we are a manufacturer, also we are a designer.
Usually, when the workpiece is passivated, the smell of nitrogen oxides is the reaction behavior, and the gas escaping on the workpiece is the reaction. In the passivation process, the color of the passivation solution is deepened. As a result of the reaction in the neutralization formula 2, the trivalent chromium ion formed is green, causing the passivation liquid to darken.
The zinc coating is oxidized by hexavalent chromium ions in an acidic passivation solution:
3Zn+Cr2O7+14H——3Zn2+2Cr3+7H2O
3Zn+2Cr2O7+16H——3Zn2+2Cr3+8H2O
In addition to chromium ions, nitric acid is also an oxidant and also reacts with zinc:
3Zn+2NO3+8H——3Zn2+2NO+4H2O
The sulfuric acid in the passivation solution also reacts chemically with zinc:
Zn+H2SO4——ZnSO4+H2
And when the hot-dip galvanized strip strip is washed with water into the passivation solution.
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Spindle Assembly,Lawn Mower Spindle Assembly,Spindle Motor Assembly,Spindle Axle Assembly
SHAOXING QIFENG AUTO PARTS CO., LTD. , https://www.sxqfap.com