CN105369261B - The technique of piston rod surface cleaning - Google Patents

Abstract

A kind of technique of piston rod surface cleaning, 1, shelve, 2, degreasing, 3, neutralize, 4, washing, 5, waterborne anti-rust processing, 6, drying, 7, table adjust, 8, phosphatization, 9, washing, 10, waterborne anti-rust processing, 11, room temperature drains；Advantage is：Wherein degreasing process is the overall rust of cleaning rod, while there is ultrasonic unit around cell body, accelerates the cleaning of rust；Neutralization step is the overall granule foreign of cleaning rod, while carrying out neutralisation treatment to the solution that preamble is remained；Washing step is the solution of cleaning preamble residual, prevents from bringing lower sequence into；Antirust treatment process is that the bar surface for being guaranteed at the state of activation has one layer of rust-preventing film；Phosphatization process is makes piston end alramenting, then washing cleaning surface drug residue, then carry out antirust treatment, and whole cleaning process is finished.

Description

The technique of piston rod surface cleaning

Technical field

The present invention is a kind of cleaning of mechanical part, and more particularly to a kind of technique is applied to piston lever of reducer for automobile surface And internal cleaning, the technique that cleannes standard meets the piston rod surface cleaning of WNB 881-E requirements.

Technical background

Piston rod cleaning machine in the market, the mode such as spray, the compressed air of use.2 kinds of cleaning equipments of the above are simultaneously Be not suitable for the cleaning of hollow stem surface and inside.Existing cleaning equipment principle and cleaning are as follows：

1. technological process：

Artificial loading → automatic feed → high-pressure rotary cleaning showers (clear water+cleaning agent+corrosion inhibiter) → wind cuts dehydration → re-blow manually（Operator's selection it can use as needed）→ manually blanking.

2. whole cleaning wind cuts through journey and is：

A, charging：In feeding station（Discharge station）It is artificial that work piece is clamped in cleaning frock clamp, by workpiece Send into high-pressure spraying station and carry out high pressure cleaning showers；

B, high pressure cleaning showers：Workpiece enters after this station, and high-pressure gear pump is extracted in precipitation filtering reservoir rinse bath Liquid carries out high-pressure spraying flushing to workpiece, and the impurity of workpiece surface is rinsed out, and the liquid after spray flows back to precipitation filtering storage Liquid bath.During spray is slightly washed, workbench drives slow rotation by electric rotating machine, so that workpiece all surfaces receive sufficiently It is sprayed；

C, wind cut dehydration：After spray rinsing, spray spout is closed, air blowing tuyere is opened, sector-style is entered to workpiece and cuts dehydration, will Moisture drying on workpiece.Workpiece is equally slowly transferred during wind is cut, to ensure that surface drying is uniform；

D, discharging：Workpiece completion cleaning and wind are cut after drying, and manual spray gun can be used as needed, and workpiece is carried out Drying, then manually takes out workpiece out of frock clamp, completes the process of whole cleaning and the drying of workpiece；

3rd, whole cleaning wind cuts through Cheng Jun and completed under PLC control, and PLC is passed through according to the shape and soil conditions of workpiece Programming Control can change each station cleaning wind and cut the drying time；

4. there are the following problems for this kind of equipment：

A. considered to be worth doing inside hollow piston rod containing certain rusty stain and weldering, can not play and remove using spray, compressed air mode The effect of rust, cleaning weldering bits；

B. cleannes requirement meets WNB 881-E standards, and simple spray, compressed air cleaning can not meet the mark It is accurate；

5. cleannes requirement

According to cleannes WNB 881-E standards, it is desirable to the cleannes inside and outside piston rod, impurity gross mass is less than 1mg, particle Diametric requirements are less than 600*600um.The original cleaning process in scene is carried out using artificial with steel brush to hollow piston rod inwall Cleaning, cleaning is cleaned using solution again.This traditional technological process has a disadvantage that：

A. hollow stem inner wall cleaning is not clean, contains larger impurity particle；

B. low production efficiency, unsuitable batch production is used；

C. clear up not thorough using steel brush, residual impurity has a strong impact on follow-up phosphatization process；

D. the overall impurity quality of product can not be required by cleannes；

E. individual product non-chromium plating area surface occurs returning rust phenomenon in cleaning process.

The content of the invention

It is the problems of above-mentioned there is provided a kind of service life for improving piston rod it is an object of the invention to solve, The technique for making cleannes meet the piston rod surface cleaning of technological requirement.

The present invention is achieved through the following technical solutions, and its technological process is：

1st, shelve

Several piston rods are put into crosshead, handled with care, it is to avoid piston rod collides with；

2nd, degreasing

Under ultrasonic state, piston rod is put into 60 ± 2 DEG C of temperature, concentration 10%-20% antirust agent LDS-004 solution tanks In, 480-600s is incubated, room temperature is taken out and places 5s；

3rd, neutralize

50-60 DEG C of temperature is put under ultrasonic state, then by piston rod, concentration is guarantor in 3%-5% PWC-001 solution tanks Warm 480-600s, takes out, and room temperature places 5s；

4th, wash

Under ultrasonic state, take out, room temperature cleaning 120s；

5th, waterborne anti-rust is handled

Take out, piston rod is put into waterborne anti-rust treatment trough, the solution in waterborne anti-rust treatment trough is 10% ± 2% water-soluble Property antirust agent PWA-001, room temperature, be incubated 60s, take out, room temperature place 5s；

6th, dry

Piston rod is put into drying oven, 100 DEG C, is incubated 600s, drying carries out installation plug after terminating, be that table tune is done Prepare；

7th, table is adjusted

Under ultrasonic state, piston rod is put into the rust inhibiting solution groove that concentration is 0.2%-0.5%, immersed at room temperature 120s；Table, which is adjusted, to be act as accelerating the product surface state of activation, is that follow-up phosphorating treatment is prepared；

8th, phosphatization

Piston rod is put into 70-80 DEG C of temperature again, concentration is in 10%-20% LD73-1 solution tanks, is incubated 900- 1200s；

9th, wash

Piston rod is put into again after phosphatization in tank at room temperature, places 10-20s；

10th, waterborne anti-rust is handled

Take out, piston rod is put into waterborne anti-rust treatment trough, the solution in property antirust treatment groove is 10% ± 2% water-soluble Antirust agent PWA-001, room temperature is incubated 60s, takes out, and room temperature places 5s；

11st, room temperature is drained.

The advantage of the invention is that：Wherein degreasing process is the overall rust of cleaning rod, while there is ultrasonic wave dress around cell body Put, accelerate the cleaning of rust；Neutralization step is the overall granule foreign of cleaning rod, while being carried out to the solution that preamble is remained at neutralization Reason；Washing step is the solution of cleaning preamble residual, prevents from bringing lower sequence into；Antirust treatment process is to be guaranteed at the state of activation There is one layer of rust-preventing film on bar surface；Phosphatization process is makes piston end alramenting, then washing cleaning surface drug residue, then carry out Antirust treatment, whole cleaning process is finished；

1. the rust of effective cleaning rod inwall, while not producing influence to bar overlay coating；

2. by antirust treatment, prevent the secondary generation of rust；

3. postorder phosphatization effect is ensured, it is phosphate coating even density, smooth；

4. by the detection of laboratory personnel, impurity quality is less than 1mg, meets the technical requirements of client.

Brief description of the drawings

Fig. 1 is cleaning figure.

Embodiment

This technological process is described in detail below in conjunction with the drawings and specific embodiments：The length of piston rod is in 200- Between 500mm, so the cleaning frock using mode is assigned vertically, advantage is to subtract frock regulating time.Degreasing bath is used Solvent is LDS-004 solution, and matched proportion density is 10%, and temperature in use is 60 ± 2 DEG C.Neutralization chamber uses solvent molten for LPWC-001 Liquid, matched proportion density is 5%, and temperature in use is 50-60 DEG C.Antirust treatment groove uses PWA-001 solution, and matched proportion density is 10%, is made It it is 25-30 DEG C with temperature.Baking operation accelerates surface rust-preventing film to be formed using 100 DEG C of hot-air seasoning forms.

Whole flow process provides ultrasonic wave using ultrasonic equipment, and the technical parameter of the equipment is as follows：

Input voltage：Alternating current 220V ± 10V

Incoming frequency：50 or 60Hz

Working frequency：16~20KHz

Power：250W

Working method：Continuously

Main frame appearance and size：600mm×350mm×200mm

Transducer appearance and size：400mm×65mm

Main frame weight：Less than 20 kilograms

Transducer weight：Less than 3.5 kilograms

Device degree of protection：IP32

In use, noting each cell body solution ratio concentration；Wherein antirust treatment groove, pH value of solution is maintained at less than 8, daily Solution acid-basicity is detected with pH test paper.

Claims (1)

1. a kind of technique of piston rod surface cleaning, it is characterised in that its technological process is：

（1）, shelve

Several piston rods are put into crosshead, handled with care, it is to avoid piston rod collides with；

（2）, degreasing

Under ultrasonic state, piston rod is put into 60 ± 2 DEG C of temperature, concentration 10%-20% antirust agent LDS-004 solution tanks, 480-600s is incubated, room temperature is taken out and places 5s；

（3）, neutralize

50-60 DEG C of temperature is put under ultrasonic state, then by piston rod, concentration is insulation in 3%-5% PWC-001 solution tanks 480-600s, takes out, and room temperature places 5s；

（4）, washing

Under ultrasonic state, take out, room temperature cleaning 120s；

（5）, waterborne anti-rust processing

Take out, piston rod is put into waterborne anti-rust treatment trough, the solution in waterborne anti-rust treatment trough is 10% ± 2% water-soluble anti- Become rusty agent PWA-001, and room temperature is incubated 60s, takes out, and room temperature places 5s；

（6）, drying

Piston rod is put into drying oven, 100 DEG C, is incubated 600s, drying carries out installation plug after terminating, be that table tune is prepared；

（7）, table adjust

Under ultrasonic state, piston rod is put into the rust inhibiting solution groove that concentration is 0.2%-0.5%, 120s is immersed at room temperature；Table Tune act as accelerating the product surface state of activation, is that follow-up phosphorating treatment is prepared；

（8）, phosphatization

Piston rod is put into 70-80 DEG C of temperature again, during concentration is 10%-20% bonderite LD73-1 solution tanks, 900- is incubated 1200s；

（9）, washing

Piston rod is put into again after phosphatization in tank at room temperature, places 10-20s；

（10）, waterborne anti-rust processing

Take out, piston rod is put into waterborne anti-rust treatment trough, the solution in waterborne anti-rust treatment trough is 10% ± 2% water-soluble anti- Become rusty agent PWA-001, and room temperature is incubated 60s, takes out, and room temperature places 5s；

（11）, room temperature drains.