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Sector Application

Controller for Plating

Strong evidence

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What LibertyCES's vendor documentation shows

Detailed chrome-reduction and cyanide-destruction control setpoints explicitly documented.

Products cited in this application

Chrome reduction/cyanide destruction batch controller

Real Specifications

Chrome reduction pH control range2.0-2.5 optimum — reaction rate slows significantly by pH 3.0, very slow by pH 4.0gf-signet-application-solutions.md
Chrome reduction detention timeMinimum 15 minutesgf-signet-application-solutions.md
Chrome reduction ORP setpoint-300mV (-400mV max) at pH 2.0gf-signet-application-solutions.md
Cyanide destruction batch, Stage 1pH 11.5 via sodium hydroxide, chlorine to ORP +450mV; monitoring target 9.5 pH / 450mV post-neutralizationgf-signet-application-solutions.md
Cyanide destruction two-stepStage 1 target oxidation below 0.1 ppm; Stage 2 pH lowered with sulfuric acid, up to 4-hour detention timegf-signet-application-solutions.md
Install / Failure Note

Two explicit, named gas hazards are built into these setpoints: dropping chrome-reduction pH further than needed risks releasing hazardous sulfur dioxide gas, and letting cyanide-destruction pH drop below 11 during the batch process risks releasing toxic cyanogen chloride gas — both explicitly named by the vendor as controller-relevant safety limits, not general handling cautions.

A plating batch controller running chrome reduction or cyanide destruction isn't just holding a setpoint — it's the only thing standing between normal operation and a named toxic-gas release. GF Signet's own process documentation ties the pH 2.0-2.5 chrome-reduction range and the pH-11.5-with-a-hard-floor-at-11 cyanide-destruction sequence directly to SO2 and cyanogen chloride gas hazards.

Every claim on this page traces to real, vendor-published documentation on file with LibertyCES. Confirm current specifications with the manufacturer before final specification.

FAQ

Is Controller used in Plating?

Detailed chrome-reduction and cyanide-destruction control setpoints explicitly documented. This is strong evidence.

What products are specified for Controller in Plating?

Documented examples include Chrome reduction/cyanide destruction batch controller — confirm current specifications with the manufacturer before final selection.

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