Post by chevystroker on Oct 21, 2016 23:14:54 GMT -4
Stopped at AZZ plating today, formerly G3 galvanizing, on Joseph Zatzman in Burnside. www.azz.com/content/azz-g3-nova-scotia
Charge is based on the weight of the object being dipped, assuming that zinc will be plated at a rate of about 6% of the weight of the object. Under 100 lbs, there is a minimum charge of $68.50 + tax and an environmental fee of 7.5 cents/lb. From 100 lbs to 1999 lbs, they charge 68.5 cents/lb.
Their kettle for dipping is 42 feet long x 4 feet wide x 6.5 feet deep. So, for dipping something like a small trailer that will fit in one dip, it is 39 cents/lb, but if it is wider and has to be double dipped, it is 49 cents/lb.
Something like a truck frame is done under miscellaneous for 68 cents/lb. They charge $100/hr for sandblasting and $65/hr for using the torch to put in drain holes.
The zinc will be about 3.8 to 4.5 mils thick, or 0.0038 to 0.0045 inch thick.
General notes on the plating.
The acid they use will not take off heavy rust or oil/grease. Heavy rust must be sandblasted off, but one hour in their blast booth will take care of a rusty truck frame with no problem. They do have a caustic bath to take off tapping/cutting fluid and light oils, but will not take off heavy grease. Heavy grease or undercoating will have to be removed before taking it to be galvanized.
Items being dipped cannot be sealed as they would float otherwise and not be galvanized properly, and could rupture/explode from the heat. Everything must have holes for venting or draining. If the parts do not drain properly, there could be acid left inside the part, which would explode when put in the kettle. Acid is partially water which would flash off into steam in the zinc bath, expand about 1000 to one, and explosively expel the hot liquid zinc out the bath. The guys there will look at the parts and determine how many drain and vent holes it needs, and add some if needed. If you don't want random holes torched in your parts, best to bring them in for the guys to look at and put the holes in yourself, or modify the design as required.
Once galvanized, a part can't be done a 2nd time. The zinc doesn't come off very well with sandblasting, zinc doesn't stick very well to older zinc, and zinc will kill their acid so it can't be dipped again in acid to strip it. So, and planned modifications to a frame must be done before galvanizing. They do provide customers with zinc repair sticks that can be put in a freshly drilled hole and hit with a torch to re-galvanize a hole in the field.
A single axle trailer they did recently was right around $500 for plating. A heavy truck frame needed an hour of blasting and an hour of torching to cut holes, then the weight of the frame times 68 cents/lb, so about $500 to $600.
I think a properly cleaned jeep frame should be able to be done for around $300, or less. Anyone know what a TJ frame weighs??
Assuming a 200 lb weight for the frame, and no blasting or torching, straight galvanizing is (200 x 0.685) + (200 x 0.075) = 152.00 x 1.15 (tax) = $174.80
So $175 for the galvanizing on a tj frame?? Plus sandblasting, and any other cleaning. Just make sure all of the modifications and repairs that need to be done are finished before plating.
Charge is based on the weight of the object being dipped, assuming that zinc will be plated at a rate of about 6% of the weight of the object. Under 100 lbs, there is a minimum charge of $68.50 + tax and an environmental fee of 7.5 cents/lb. From 100 lbs to 1999 lbs, they charge 68.5 cents/lb.
Their kettle for dipping is 42 feet long x 4 feet wide x 6.5 feet deep. So, for dipping something like a small trailer that will fit in one dip, it is 39 cents/lb, but if it is wider and has to be double dipped, it is 49 cents/lb.
Something like a truck frame is done under miscellaneous for 68 cents/lb. They charge $100/hr for sandblasting and $65/hr for using the torch to put in drain holes.
The zinc will be about 3.8 to 4.5 mils thick, or 0.0038 to 0.0045 inch thick.
General notes on the plating.
The acid they use will not take off heavy rust or oil/grease. Heavy rust must be sandblasted off, but one hour in their blast booth will take care of a rusty truck frame with no problem. They do have a caustic bath to take off tapping/cutting fluid and light oils, but will not take off heavy grease. Heavy grease or undercoating will have to be removed before taking it to be galvanized.
Items being dipped cannot be sealed as they would float otherwise and not be galvanized properly, and could rupture/explode from the heat. Everything must have holes for venting or draining. If the parts do not drain properly, there could be acid left inside the part, which would explode when put in the kettle. Acid is partially water which would flash off into steam in the zinc bath, expand about 1000 to one, and explosively expel the hot liquid zinc out the bath. The guys there will look at the parts and determine how many drain and vent holes it needs, and add some if needed. If you don't want random holes torched in your parts, best to bring them in for the guys to look at and put the holes in yourself, or modify the design as required.
Once galvanized, a part can't be done a 2nd time. The zinc doesn't come off very well with sandblasting, zinc doesn't stick very well to older zinc, and zinc will kill their acid so it can't be dipped again in acid to strip it. So, and planned modifications to a frame must be done before galvanizing. They do provide customers with zinc repair sticks that can be put in a freshly drilled hole and hit with a torch to re-galvanize a hole in the field.
A single axle trailer they did recently was right around $500 for plating. A heavy truck frame needed an hour of blasting and an hour of torching to cut holes, then the weight of the frame times 68 cents/lb, so about $500 to $600.
I think a properly cleaned jeep frame should be able to be done for around $300, or less. Anyone know what a TJ frame weighs??
Assuming a 200 lb weight for the frame, and no blasting or torching, straight galvanizing is (200 x 0.685) + (200 x 0.075) = 152.00 x 1.15 (tax) = $174.80
So $175 for the galvanizing on a tj frame?? Plus sandblasting, and any other cleaning. Just make sure all of the modifications and repairs that need to be done are finished before plating.