High speed CNC Machining 6061 Aluminum Turning M4 Thread holes bottom

6061 Aluminum Turning M4 Thread holes bottom - Accept all kinds of aluminum parts processing.

Aluminum surface treatment

[methods1] Skim the following solution after chemical treatment: phosphoric acid 7.5 Chrome oxide
7.5 alcohol 5.0 Formaldehyde (36-38%)80 in 15 - 30 c.dip 10-15 min And then in 60 - 80 c.
Under the water to wash, dry.

[methods2] After degreasing anodized in the following solution: concentrated sulfuric acid 22 g/l in 1-1.5

A/dm2 The dc is strong Under the degree of impregnation 10-15 min ,Again in saturated potassium

dichromate solution,in 95 - 100 c. The impregnation 5-20 min, And then washed,Dry.

[methods3] After degreasing chemical treatment in the following solution: Potassium dichromate 66
Sulfuric acid (96%) 666water 1000 in 70 c. The impregnation 10 min And then washed, dry.

[methods4] Skim the following solution after chemical treatment: nitric acid (D = 1.41)3 Hydrofluoric acid
(42%)1 in 20 c.The impregnation3 s "After washing with cold water, then on 65 c.
Wash with hot water, distilled water rinse, and dry.This method is suitable for copper
The higher casting aluminum alloy.

[methods5] After sand blasting or polished, In the following solution ZhongYang polarization: Chrome oxide

100 Sulfuric acid 0.2 Sodium chloride 0.2 in 40 c.In under the 10 min The voltage from the inside 0 v Rose

to 10 v , keep 20 min,Again in 5 min From the inside 10 v Rose to 5 0 v,keep 5 min And then washed,700

c Under the dry.Note: the free chrome oxide concentration may not exceed 30-35 g/l.

[methods6] After degreasing chemical treatment in the following solution:Sodium silicate 10
Non-ionic detergent 0.1 in 65 c. The impregnation 5 min And then in 65 C Under water, then use distilled

water washing and drying.Suitable for bonding of aluminum foil.

[methods7] After degreasing chemical processing in the following solution: Sodium fluoride 1
Concentrated nitric acid 15 water 84 Soaking at room temperature 1 min , After wash again in the

following solution treatment: concentrated sulfuric acid 30 Sodium dichromate 7.5 water 62.5 Soaking

at room temperature 1 min, washed

32mm Internal Diameter, 2mm Wall thickness, 60mm Length
Black annodized
n.w.: 19g/pc
Material: 6061-T6

Describe

Primary Competitive Advantages

Experienced Staff Guarantee/Warranty Product Features Product Performance Prompt Delivery
Service Small Orders Accepted OEM Many finishes choice Many raw material

FAQ

→ If i need the parts urgent, how can you help?
We are alway here to help.our factory production time is flexible,we will prioritized arrange urgent order

to meet customer urgent requirement.
→ I want to keep our design in secret?
Sure.

→ Can i buy some products from your company?
All our products are customized made according to customers' drawing or sample,not stock products

available.
→ Can i get some sample for check quality?
Yes, single sample will charge sample fee.For batch production we will provide sample for check before

mass production,or we will charge sample fee first, will refund after batch production.

Display

Shanghai Lijin focuses on the Carbon Fiber industry and offers carbon fiber tubes, plates, and aluminum CNC services.

Being experienced in the carbon fiber applications for over 7 years, Shanghai Lijin manages customized production according to various industry standards. Shanghai Lijin started to keep in stock for some standard

sized and frequently ordered tubes and plates. This enables Shanghai Lijin to make prompt delivery. Not only

can Shanghai Lijin complete mass production orders in short period, we can even ship normal sample, prototype orders of Carbon Fiber Plate CNC parts in just SEVEN days after order confirmation when the

drawings are available. Shanghai Lijin is dedicated to solve any technical points during the production and new item developing to ensure the quality.

Carbon Fiber tube production is Shanghai Lijin’s core business and occupies 70% of our turnover.
The carbon fiber tubes Shanghai Lijin mainly produce is table-rolled and oven thermoset. The tubes can be Full Carbon or Carbon Fiber and Fiberglass composite, depending on the application, weight limit,mechanical

strength and surface requirement.Shanghai Lijin offers top quality ROUND carbon fiber tubes. The general OD tolerance we achieve is +/-0.10mm and it can be even +/-0.05mm after our special surface process.

The maximum length of the tube can be 5500mm.

Besides the traditional table-rolled carbon fiber tubes, Shanghai Lijin also offers REAL Filament wound carbon fiber tubes,which are widely used for mechanical strength like auto driving shaft, antennas, even for military

applications. The filament wound carbon tubes are wound at a certain angle like 30 or 45 degree. We invested the new production line from Jun 2013 and this increases Shanghai Lijin’s advantage in the carbon

fiber tube industry. There are just a few real filament wound carbon fiber tube manufacturers in domestic

China and we are one of them.

Since the rapid growth of UAV in the international market, instead of the standard plane like Phantom from DJI, RC fans are getting more interested in the customized multicopters. As carbon fiber is the most preferred

material for UAV, Carbon Fiber CNC parts demand is increasing. Shanghai Lijin sticks to offering OEM service for the international market, fine quality and prompt delivery.To ensure the thickness tolerance +/-0.10mm and minimum warp of the Carbon Fiber plates that are used for the cutting, Shanghai lijin execute high standard to

the plate production. For the normal thicknesses including 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm,
Shanghai Lijin keeps regular stock, to make sure the raw material will be available for cutting immediately when order is firmed.Experienced engineers are in Shanghai Lijin’s office ready to deal with different types of

drawings from customers. No matter the drawing formats are .DWG, .DXF that can be edited by AutoCAD

and used directly for production, 3D drawings like .IGS, or even draft drawings, our staff can do adjustment and change to customer’s idea. Our engineers are also good at English communication, Email and IM is easy

for them. Editing drawings for customers is FREE* of charge. Shanghai Lijin is having several professional CNC machines for carbon fiber cutting and drilling, with the capacity of cutting 20-50pcs standard full sized plate per day. The carbon fiber chassis general cutting tolerance Shanghai Lijin offer is +/-0.02mm. The

special designed cutting solution ensures the smoothness of the cutting edge.

‘Customers’ Persuit for Change, Lijin’s Motivation for Growth’, Shanghai Lijin takes customers’ demand for center, enhances the
customer satisfaction, and grows with customer.