SegoMan DeSigns wrote: ↑Tue Jul 19, 2022 3:02 am
How are you getting the 31.25 sheets of material weighing in at 20,000 lbs to / from the yard for the initial shearing??
That is why you set up the entire deal
BEFORE things get started.
There are a LOT of variables here, and I cannot possibly lay out the perfect plan without knowing everything.
These decisions must be made by the OP.
LOGISTICS is about the efficient movement of a product at the most cost effective and expedient manner.
Say the customer is buying the material from ACME STEEL in Anytown, England. ACME STEEL has a shear that can cut up the plate to 300mm squares for a price per cut, or a price per sheet, or whatever. The customer never thought to ask if the yard can cut up these plates for them, or perhaps the cut fee
for the retail customer is too high, or maybe he doesn't want to be involved in the production process at all. Some shops WILL do a job for a metal shop that brings constant business because they have established a business relationship, but will NOT do a one off job for a walk-in customer.
The customer thinks the plasma table will be used to cut up the plate, so he incurs the cost of transporting the 10 TONS of huge steel plates to the shop. Now the shop has to pay transport all of that metal back to the shear, and then back to the shop again.
It would be BETTER to get the customer's okay to have the plates sheared (at least in ONE direction) rather than plasma cut, to save money. The 1000 plates can be palletized, and either picked up by the OP or delivered to his shop for hole punching (and cross shearing?)
with his new ironworker! 
If the customer has the material already, and is willing to deliver it to the plasma table, it MIGHT be better or more cost effective to deliver it to ACME directly. Is it a shorter distance? Will he pay less tolls? Whatever. If not, then the plates are delivered to the plasma table, and the OP transports them (farther away?) to the shear for cutting, and returns with two pallets of plates to be punched
with his new ironworker!
Are you actually going to tell the customer to drop it off at your competition?
Who says a steel yard is competition? The steel yard may not be interested in "such a small job" (to them), or their price-per-hole is too high for the customer,
or they are six weeks out on a job like that. There are a HUNDRED reasons why the steel yard that SELLS the steel might not want to, or might not be ABLE to produce the plates by the customer's deadline. They might be GLAD that someone is going to punch the 4,000 holes into the 300x300mm sheared plates
with his new ironworker!
Will they sheer outside stock? if they have a shear I'm sure they have press punches too (bumper pull, tractor driven turret or otherwise) how much are they charging to sheer? I see an hr / sheet to load sheer and stack so that is $75 / sheet x 32 = $2,400
I will not attempt to GUESS at what the yard would charge to shear the material in ONE or BOTH directions. it could be a price per cut, or an hourly rate for the shear, or who knows!?
I just loaded 105 amp consumables and bumped the cut speed to 62" Ipm quality / 76" ipm production.
Need I remind you of a thread where I harvested a full sheet of 3/4" with $10 in consumables? I can see a consumable budget in the $300+ range for this project. with a second torch your harvesting the skeleton behind the gantry.
Is a second man running that torch and pulling the skeleton, or does production stop until YOU do that?
The Hyperthem at 105amps has a duty cycle up to 80%, the time it takes to strip the stock and reload the Hyperthem has cooled and is saying bring it on man. I see aprox 1 hr / sheet to load cut and strip that is 32 hrs give or take, add to that doss removal / stacking and banding.
There is NO dross removal with a shear and puching holes
with his new ironworker!
My 20 Hp compressor has a continuous run mode that keeps the heads cool by holding the intake valves open when at full operating pressure.
With his new ironworker! the plasma table is free to do another job simultaneously.
My Clearpath servo's tossed around the 400 lb gantry at speeds of 500 / 750 / 1000 ipm for a burn in / torture test of 30 hrs X was kinda (but not really) warm, Y & Z had ice hanging of the motors
I'm glad to have provided Jack with some insight into what could be a lucrative job, a lot of companies don't have the space. tooling or personal to do everything in house and sub projects like this out.
I am sure he has room for
his new ironworker!
Joe
.
