CH CARBOHART granulars are sintered coals designed for pack carburizing, made of external cylinders containing the activator. This allows to use the coal until granules are completely incinerated. Approximate depths are reported on the attached table.
Carburizing of alloy steels for depths lower than 6 tenths.
Carburizing of carbon steels with low quenching.
INSTRUCTION FOR USE:
To be used in conjunction with heat-resistant steel BOXES, that we can provide upon request. Prepare the boxes by applying at least a 1 cm thick granular layer at the bottom, arrange the workpieces in layers and coat them with granulate; additional layers can be prepared in the same way.
The upper layer must be at least 2-3 cm thick.
The box must be tightly sealed with SLC Paste to prevent the cementing substance from leaking out; introduce the box into the muffle furnace as soon as the sealing paste dries off.
Areas which are not to be cemented can be protected by applying a coat of stop-off LUISO W33 protective paint anti carburizing, specifically designed for that purpose. Whenever possible, it is recommended to use small-sized boxes, bearing in mind that it takes about 5 minutes for every centimetre in width to heat the whole mass.
Being a sintered coal, CARBOHART keeps its hardening characteristics. After use, it is necessary to separate the incinerated part, compensating the loss with an extra coat of product.
While working is in progress, coal generates a cementing gas which contains carbon monoxide likely to flow out of the boxes. Therefore, it is recommended to work in appropriately ventilated facilities. Put on GLOVES and PROTECTIVE EQUIPMENT before handling the product. CARBOHART coal does not contain barium activators.
Packaging: 25 Kg package