BLACKENING COATING
Put the metal parts into the solution of NaOH, NaNO2 and other potions. At a certain temperature, the parts will react chemically to produce a thin blue (black) oxide film. Blackening can be divided into normal temperature blackening and high temperature blackening. Generally, the surface oxide film of normal temperature blackening is relatively thin, and the effect of secondary blackening is better. The blackening surface treatmenttemperature at high temperature is about 135 ° to 155 ° and the blackening effect is also the best.
What Is Blackening For Metal?
Metal blackening is a common CNC surface finish treatment process. The purpose of blackening is to prevent rust on the metal surface. There are two kinds of metal blackening: alkaline heating blackening and normal temperature blackening. The problem of checking the antirust effect may occur due to process problems in normal temperature blackening.
How Do You Blacken Metal?
The process flow of metal blackening is as follows:
Degreasing: Boil the parts in degreasing solution for 20~30 minutes at 80~100 ℃.
Cold water cleaning: rinse with flowing clean water.
Pickling: wash with hydrochloric acid solution at room temperature for no more than 30 seconds.
Blackening (put the blackening liquid in a stainless-steel container and heat the bottom with an electric furnace)
Water washing: wash with flowing cold water or warm water for 30-60 seconds.
Boiling water cleaning: 2-5 minutes.
Saponification treatment: temperature 80~90°, time 2-3 minutes.
Immerse in oil: immerse in transformer oil or spindle oil at about 80° for 1-3 minutes, and then the finished product is cleaned.
As a professional cnc machining exporter, Richconn provides cnc machining services, blackening coating, precision cnc machining, etc. Want to know more, contact us.
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
CNC MACHINING SERVICES FROM RICHCONN | Based on the processing and manufacturing industry, continuous improvement and growth; The main businesses are small CNC and medium-sized CNC preci... |
 |
ANODIZING | Degree oxide film, adding pigments to the oxidation solution can form an oxide layer of various colors. The oxidized parts have the functions of... |
 |
What Are The Characteristics Of CNC Machining? | What Are The Characteristics Of CNC Machine? Process concentration, automation, high flexibility, and strong capabilities are the characteristic... |
 |
Black Oxide Services | At Richconn, we rely on rack and suspend technology to provide black oxide coating services that are delivered quickly and meet high quality standa... |
 |
ELECTRONICS CNC MACHINING | Electronics CNCMachining Our purpose is to provide customers with processing services of various testing fixtures, mold parts and non-calibrated p... |
Похожие товары
 |
Excavator Cylinder Pins Induction Hardening | Продавец: TianYuan Induction Electric(Chengdu)Co., Ltd | Excavator Cylinder Pins Induction Hardening Product Description This Complete Induction Hardeni... |
 |
3 Axis Glue Dispensing System Robot clutch dispensing Machine for Glue Epoxy Adhesive potting | Продавец: 824681 | Automatic Glue Mixing and Potting Machine for LED driver AB glue meter mix dispensing machin... |
 |
Automatic Glue Mixing and Potting Machine for LED driver | Продавец: 824681 | Automatic Glue Mixing and Potting Machine for LED driver AB glue meter mix dispensing machin... |
 |
AB glue meter mix dispensing machine/automatic glue potting machine for LED driver automatic epoxy resin potting machine 2 Part Silicone plyurethane epoxy dosing and dispenser potting machine | Продавец: 824681 | AB glue meter mix dispensing machine/automatic glue potting machine for LED driver automatic ep... |
 |
Double Liquid AB Adhesive Dispenser Equipment | Продавец: 824681 | Double Liquid ABAdhesiveDispenserEquipment AB glue meter mix dispensing machine/automatic glue ... |
