CN105624655A - Chemical nickel-plating process of iron workpiece - Google Patents

Abstract

The invention discloses a chemical nickel-plating process of an iron workpiece. The chemical nickel-plating process is characterized by comprising the following steps of 1, oil removing, wherein the iron workpiece is heated to 65 DEG C to 70 DEG C and soaked with 5%-10% oil removing powder for 5-10 min; 2, washing; 3, acid pickling and activating; 4, washing; 5, chemical plating, wherein the thoroughly washed workpiece is heated to 85 DEG C to 90 DEG C, and the plating time ranges from 10 min to 20 min; 6, washing, the workpiece is washed through a water tank or washed with tap water, and a plating solution brought out by the workpiece is washed away; 7, passivation, wherein 5% potassium dichromate or chromic anhydride is used for passivation, the passivation time ranges from 1 min to 3 min, the color of a plating is prevented from being changed, passivation liquid is in a normal-temperature state, and heating is not needed; 8, washing, wherein the passivation liquid left on the workpiece is washed away; 9, pure water washing, wherein pure water washing aims at preventing watermarks or other residues of the workpiece, and pure water is heated to 80 DEG C to 100 DEG C; and 10, blow-drying, wherein the workpiece is blow-dried with an oilless air compressor or dried. The process is simple in method, many repeated procedures are omitted, and work efficiency is improved.

Description

A kind of ironware nickel chemical plating technology

Technical field

The present invention relates to a kind of ironware nickel chemical plating technology.

Background technology

By electrolysis or chemical method in the method for metal or some nonmetal plating last layer nickel, it is called nickel plating. Current ironware nickel chemical plating technology is more complicated, also without unified specification, it does not have unified standard, the degree part quality causing production is uneven, a lot of operations that repeat also make under production efficiency, increase the work burden of workman, make the competitiveness of product in market not high simultaneously. For some operators just entered a profession, it does not have a clear and definite method technique, cause, when operation, mistakes and omissions often occur, in some instances it may even be possible to cause serious consequence.

Summary of the invention

Because the drawbacks described above of prior art, the technical problem to be solved is to provide a kind of ironware nickel chemical plating technology, and this process is simple, eliminates a lot of repeatability operation, improves work efficiency.

For achieving the above object, the invention provides a kind of ironware nickel chemical plating technology, it is characterised in that comprise the steps: 1) oil removing: it is warmed to 65-70 degree with the degreasing powder of 5%-10% and soaks 5-10 minute;

2) washing: cross tank, or with tap water, thoroughly blind hole, dead angle, all rinse well, do not have degreasing powder to remain, have ready conditions and soft cloth hands can be had to examine lower plane, it is ensured that oil is better removed;

3) acid-wash activation: with the hydrochloric acid of 15%-20%, soak time 1-3 minute, be primarily to see workpiece to determine the permanent of time, as workpiece itself has too much getting rusty, please before oil removing, first eliminate rust;

4) washing: used tank or tap water, and rinsed well thoroughly, in order to avoid the hydrochloric acid residual brings aqueduct into, blind hole dead angle must be rinsed well with hydraulic giant;

5) chemical plating: the workpiece rinsed well, is put into and heats to 85-90 ��, and plating time is 10-20 minute;

6) washing: cross tank and clean, or with tap water, the plating solution that workpiece is brought out cleans up;

7) passivation: with dichromic acid first or the chromic anhydride of 5%, passivation time is 1-3 minute, it is prevented that coating can variable color. , passivating solution is room temperature state, it is not necessary to heat;

8) washing: the passivating solution of workpiece residual is cleaned up;

9) pure water is washed: it is prevent workpiece from having watermark that pure water is washed, and has other residue, and pure water is warmed to 80-100 ��;

10) dry up: dry up with oilless air compressor air gun, or dry.

The invention has the beneficial effects as follows: the inventive method is simple, eliminate a lot of repeatability operation, improve work efficiency. .

Detailed description of the invention

Technical scheme disclosed by the invention is a kind of ironware nickel chemical plating technology, it is characterised in that comprise the steps: 1) oil removing: it is warmed to 65-70 degree with the degreasing powder of 5%-10% and soaks 5-10 minute;

2) washing: cross tank, or with tap water, thoroughly blind hole, dead angle, all rinse well, do not have degreasing powder to remain, have ready conditions and soft cloth hands can be had to wipe lower plane, it is ensured that oil is better removed;

3) acid-wash activation: with the hydrochloric acid of 15%-20%, soak time 1-3 minute, be primarily to see workpiece to determine the permanent of time, as workpiece itself has too much getting rusty, please before oil removing, first eliminate rust;

4) washing: used tank or tap water, and rinsed well thoroughly, in order to avoid the hydrochloric acid residual brings aqueduct into, blind hole dead angle must be rinsed well with hydraulic giant;

5) chemical plating: the workpiece rinsed well, is put into and heats to 85-90 ��, and plating time is 10-20 minute;

6) washing: cross tank and clean, or with tap water, the plating solution that workpiece is brought out cleans up;

7) passivation: with dichromic acid first or the chromic anhydride of 5%, passivation time is 1-3 minute, it is prevented that coating meeting variable color, passivating solution is room temperature state, it is not necessary to heat;

8) washing: the passivating solution of workpiece residual is cleaned up;

9) pure water is washed: it is prevent workpiece from having watermark that pure water is washed, and has other residue, and pure water is warmed to 80-100 ��;

10) dry up: dry up with oilless air compressor air gun, or dry.

The preferred embodiment of the present invention described in detail above. Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work. Therefore, all technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (1)

1. an ironware nickel chemical plating technology, it is characterised in that comprise the steps: 1) oil removing: it is warmed to 65-70 degree with the degreasing powder of 5%-10% and soaks 5-10 minute;

2) washing: cross tank, or with tap water, thoroughly blind hole, dead angle, all rinse well, do not have degreasing powder to remain, have ready conditions and soft cloth hands can be had to wipe lower plane, it is ensured that oil is better removed;

3) acid-wash activation: with the hydrochloric acid of 15%-20%, soak time 1-3 minute, be primarily to see workpiece to determine the permanent of time, as workpiece itself has too much getting rusty, please before oil removing, first eliminate rust;

4) washing: used tank or tap water, and rinsed well thoroughly, in order to avoid the hydrochloric acid residual brings aqueduct into, blind hole dead angle must be rinsed well with hydraulic giant;

5) chemical plating: the workpiece rinsed well, is put into and heats to 85-90 ��, and plating time is 10-20 minute;

6) washing: cross tank and clean, or with tap water, the plating solution that workpiece is brought out cleans up;

7) passivation: with dichromic acid first or the chromic anhydride of 5%, passivation time is 1-3 minute, it is prevented that coating meeting variable color, passivating solution is room temperature state, it is not necessary to heat;

8) washing: the passivating solution of workpiece residual is cleaned up;

9) pure water is washed: it is prevent workpiece from having watermark that pure water is washed, and has other residue, and pure water is warmed to 80-100 ��;

10) dry up: dry up with oilless air compressor air gun, or dry.