What information should be collected before quoting equipment for cutting-oil residue on machine tools?

What information should be collected before quoting equipment for cutting-oil residue on machine tools? The answer is not a longer list of machines and figures. It is a record of your own work - which position is being cleaned, what the deposit actually is, what that position can offer, what nobody may touch, and what "finished" means at that position.

Cutting-oil residue behaves differently from road grime or kitchen grease. It arrives as a fluid film, a mist deposit, a cured skin or an overspray crust depending on how the machine runs and how long the surface sits between duties, and it sits beside ways, seals, cabinets and controls. Suppliers answer in general terms when the description is general. Every section below is a field to fill in before an enquiry leaves your plant.

Two things must be separated before anything else: what you are prepared to have cleaned, and what must stay exactly as it is. A quotation that quietly assumes the second category is part of the job is the most expensive document in this process.

A single line naming the machine is not enough, because the machine is not the surface. Write one card per position and keep that position number the same in every later message, drawing and invoice. Each card answers the same questions.

• How the position is reached - floor route, doorway, turning space, and whether anything has to come off before a person or a unit can get there.
• What may be removed for cleaning and what must stay in place: covers, panels, brackets, cable chains, glands, nameplates.
• The surfaces in order of how much they matter: machined faces and guides first, then guarding and exterior panels, then cabinet outsides.
• What sits directly above, below and beside it, and what would be damaged by anything running off the position.
• Who owns that position, who authorises the work, and who signs the machine back to production.

Photograph each position twice from different sides and keep those photographs with the card. A supplier working from photographs asks better follow-up questions than one working from a model name, and a plant that photographs the position before work starts can prove what condition it was in.

Cards written this way also settle an argument that otherwise arrives late: the difference between cleaning the working area around the machine and cleaning the machine itself. State on the card which of the two you are buying.

Cutting oil is a family, not a substance. The description you send should record the family, the condition and the age of whatever is on the surface, because those three decide what any method can achieve. Where several fluid types are in use, name each one against the position where it appears.

Record whether the fluid reaches the surface as a flood, a mist or a splash; whether it is warm from the process or cold and standing; whether it arrived within the shift or has been building for weeks; and whether it is mixed with swarf, abrasive fines, graphite, dry lubricant or dust. Then note what keeps returning it: an unsealed gap, a leaking fitting, a mist that escapes the enclosure during the cycle. Residue that is actively being produced cannot be removed permanently, and a method chosen without that note looks like a failure within days.

The state matters more than the name. A fluid film and a soft mist deposit respond to heat. A cured skin or an overspray crust that machine warmth has baked onto a panel usually does not respond to the same approach, and pushing harder on it risks the coating underneath. Cured skin and hardened crust belong on the card as a separate line with their own question attached.

Mark two patches of the worst realistic deposit with tape, photograph them, and ask the supplier to treat exactly those patches in the trial. Nothing else in this process produces a comparable answer.

Equipment is delivered into a position that either supports it or does not. Measure the position rather than trusting the drawing, and write down who took each reading and when.

Start with the path the unit travels: the doorway it must pass, the corridor, the surface underfoot, and any threshold or ramp. Then the space it will occupy, including the room a door or panel needs to swing and the clearance a person needs to reach the work without leaning over a table. A position that fits the cabinet but not the access is not a usable position.

Next the services at that position, not at the building intake: which socket or circuit serves it, what protection is fitted there, where the isolator is and who is allowed to operate it. Record the water source and how far it is, and whether the water reaching the position is hard, softened or reclaimed.

Finally, and most often forgotten, the run-off. Where does anything applied to this position go - a floor drain, a gully, a bunded area, or nowhere at all? On a shop floor that drain may be the route carrying swarf and fluid into a system somebody else is responsible for. Name the person who signs off that route before the trial, because a cleaning method refused by the waste rule is not a method at all. That is the point at which machine tool steam cleaning becomes a permission question as much as a technical one.

Write an exclusion block onto the front of the enquiry and keep it short enough that anyone reading it will actually check it. On each machine card, list the assemblies that are out of scope: guides and ways, ball screws, spindle and tool interface, magazine and changer, scales, axis references and measuring strips, door seals, glands and cabinet penetrations, bearings, hydraulic and pneumatic fittings, safety switches and the control panel face.

Ask every bidder to mark that block rather than comment on it. A bidder who leaves it untouched has read nothing; a bidder who circles items and says why has read your machine as carefully as you have.

Name the fallback for everything excluded - who cleans those items, with what, and under whose authority. That fallback is usually manual work with a cloth and a product the plant already controls, and it belongs in the same document so nobody pretends the quotation covers it.

Write the finishing condition in observable terms, per surface type, and let a person who did none of the work apply it. Useful wording survives on the shop floor: no film that leaves a mark when a gloved hand passes over the panel; no residue pooled in a ledge, joint or channel; no deposit visible in the gap where guarding meets the frame; no staining that was not there before; nothing left damp where the machine will sit over a shift or a weekend.

Then add the condition that a definition based on appearance usually omits: after cleaning, the machine still behaves as it did before. Guards close and latch, switches still respond, seals still seat, the enclosure keeps its fluid in, and nothing has migrated into a channel or a gap it was never in. Judge each taped patch only once it is dry, because a wet surface always flatters the work done on it.

Return-to-service wording belongs beside the finishing condition, not after it. Say who inspects, who signs, and what must be true before the machine goes back on the schedule. Where the schedule is tight, say so in the same terms you use with production.

A quotation listing a machine and a price cannot be compared with another one, because the machine is only part of what you are buying. Ask every bidder to state the sequence they propose: what is applied first, whether heat is used and where it is applied, how long a surface is left before anything is wiped or rinsed, how the loosened material is picked up, and how the surface is left dry. Ask which step handles the cured skin specifically, since that is where a proposal usually goes quiet.

Ask which consumables are needed, who supplies them, how they are replaced and how often; whether the answer changes with the fluid family you named; and who pays for them during the trial. Ask whether the process depends on a service visit, a cartridge, a calibration or a licensed operator, and what happens if that dependency lapses.

Ask what the supplier needs from you that has not been offered yet. A supplier who cannot name anything is either uninterested or inexperienced with machine tools, and both are reasons to keep looking.

Send the same package to every bidder - the position cards, the deposit description, the survey, the exclusion block, the finishing conditions. Do not tailor it. A tailored enquiry produces flattering answers that cannot be compared.

Then attach the same short list of questions to every copy. Which document states the figures for the exact unit being delivered, and can that document be issued in your name. Who connects the unit at the position, who pays for that work, and who is responsible between connection and first run. What consumables and service arrangements the running cost depends on. Which of the listed protections are fitted on the quoted unit and how each one is proven. Which protections and which tests are absent, and where the risk therefore sits with the buyer. What the supplier needs from you to answer all of this properly.

Score the replies in one table with the same columns. Where a bidder answers with a product name instead of a document reference, mark that cell as unanswered rather than filling it in for them. That table, not the brochure, is the basis of the decision.

Choose one position, agree the window with production, and agree the stop conditions before the work begins. Written stop conditions are the difference between a trial and an accident: anything reaching a guide, a seal or a cabinet opening; a switch or a sensor behaving differently afterwards; fluid travelling to a neighbour or into a channel it should not enter; a panel finish changing colour or lifting at an edge.

Work the taped patches only, photograph them before and after, judge them dry, and let someone who never held the lance do the judging. Then repeat on a second machine with a different operator. One patch proved by one person on one machine proves very little, and a method that cannot survive a second operator is not a method your plant can run.

Record what failed in the same detail as what passed, and keep that record with the trial photographs. Where the boundary between your machine cards and a catalogue machine does not hold - the position too tight, the deposit outside what anyone will accept in writing, the run-off route refused - take the cards and the trial record to customized steam cleaning equipment engineering rather than asking another supplier for a cheaper price on the same wrong machine.

A short review takes less time than another round of emails. Each position has a card and two photographs. Each deposit is named by family, condition and age, with the source that keeps returning it. The path, the space, the supply and the water at the position have been measured by a person, with names and a date. A drainage route has been agreed and signed. The exclusion block sits on the front page and bidders have been asked to mark it. The finishing conditions are observable, include the still-works-afterwards test, and are judged dry. Stop conditions are written. The same questions go to every bidder and the answers will be read in one table.

If any box is empty, the enquiry is not ready. A quotation built on a half-finished description will look cheap, arrive with assumptions attached, and be paid for twice.