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THJ711            




等级:略有小成
文章:4
积分:23
注册:2010-01-06

大家觉得以下铝常温着黑色怎么样?

技术说明如下:

LUMICLAD® Black Oxide Process for Aluminum Alloys

A New Blackening Process for AluminumThe LUMICLAD® Black Oxide process (patent applied for) is a new blackening method by which aluminum alloys can be coated with a durable and attractive black oxide finish. Utilizing a simple immersion tank process line, the LUMICLAD solutions carry out a two-stage chemical reaction to form an attractive, satin-gloss black finish that is tightly adherent to the aluminum surface.

The LUMICLAD Finish is Attractive & DurableWith a coating thickness of only .000060 inches (1.5 microns), the LUMICLAD finish is quite smooth and durable, and has a smooth crystal structure that absorbs an optional topcoat, such as a dry-to-touch sealant or clear polymer. The result is an attractive satin-gloss black surface that is well-suited for many machine/tool or decorative applications requiring good sales appeal and scratch resistance. On many surfaces, such as castings, the LUMICLAD finish improves the overall smoothness of the base metal, thereby enhancing the appearance and handling properties.

An Attractive, In-House Blackening OptionUntil today, black anodizing has been the only viable option for manufacturers of many aluminum components. While the anodized finish is extremely durable, the process itself is so complex that only those who specialize in it can operate it properly. In addition, the anodized coating is thick enough to cause a measurable dimensional change and close down critical hole diameters. While the protective properties are very high, they are often far higher than the application demands. Similarly, the cost of the anodizing is often prohibitively high, as well. Most manufacturers send their work to an outside shop - a practice that often involves excessively long turnaround times that do not fit with today’s "just-in-time" manufacturing. Though the corrosion resistance of the LUMICLAD finish will not match that of black anodizing, it is durable enough for many indoor industrial applications. Its simple process cycle allows manufacturers to do their own blackening, in-house, without the long turnaround times of outside finishing. This feature creates opportunities for the user to streamline workflow patterns, reduce inventory levels, speed shipment of finished product and reduce costs.

The LUMICLAD Process is SimpleFor most aluminum alloys, the LUMICLAD process takes about 30 minutes and utilizes the following steps:Step 1: SAFE SCRUB® ETCH Cleaner: Cleans and micro-etches the metal surface. 
Immerse parts for 8 minutes at room temperature.
Step 2: Water Rinse: Clean water; 20 seconds.Step 3: LUMIPRIME® Primer/Prep: Deposits a primer coating to prep for blackening. 
Immerse parts for 8 minutes at room temperature.
Step 4: Water Rinse: Clean water; 20 seconds.Step 5: LUMICLAD® Black Oxide: Blackens the metal surface. 
Immerse parts for 10 minutes at 200° F.
Step 6: Water Rinse: Clean water; 20 seconds.Step 7: DRI TOUCH® DS Dewatering Sealant: Displaces water & seals the black finish.The finished black surface has a very smooth, semi-gloss appearance, with no ruboff.
Note: Extrusions and heavily corroded parts may require bead blasting or more extensive etching in order to properly prepare the surface for blackening. Your BIRCHWOOD CASEY representative can guide you.

What About the EPA?The LUMICLAD process utilizes zinc/molybdenum chemistry to form the black finish. In short, the LUMIPRIME step deposits a very thin layer of metallic zinc on the aluminum surface that serves as a primer for the LUMICLAD molybdenum black oxide finish. Consequently, the rinse waters in the process line will contain very low concentrations of zinc and molybdenum. There are two options for handling these metal-bearing rinses:
A. Small process lines usually do not exceed the regulated limit of 5 ppm.
Rinse tanks under 10 gallons can usually be dis×ged to the drain without treatment.

B. Larger process lines use Ion Exchange to purify and recycle the rinse waters.
For process lines utilizing tanks of 40 gallons or more, Ion Exchange is a proven, cost-effective method for purifying rinse waters in a completely closed-loop manner, with no dis×ge of any kind to the sewer. No dis×ge permit would be needed. In this scenario, all the rinse water is collected and cycled through the Ion Exchange system that purifies it so it can be re-used in the rinse tanks. No water goes to the drain.

Ion Exchange Systems are available for purchase or lease:
For LUMICLAD process lines of up to 200 gallon tank size, BIRCHWOOD CASEY supplies a complete, skid-mounted Ion Exchange System, for purchase by the customer. This unit incorporates the following components:
A sump tank to collect the rinse waters, ¾ hp centrifugal pump, 20” particle filter, 14” x 48” carbon filter chamber, two mixed-bed resin tanks (each tank contains 3.5 cu. Ft. of mixed cation/anion resin), conductivity light and hose connections. The system can generate a total flow rate of about 10 gpm and has a central control panel for straightforward water and power connections.
For LUMICLAD process lines of more than 200 gallon tank size, BIRCHWOOD CASEY has coordinated with SIEMENS WATER TECHNOLOGIES to provide Ion Exchange services and other waste treatment needed on a lease basis. SIEMENS offers Ion Exchange systems and can also accept any other hazardous waste for proper treatment. SIEMENS would work directly with the customer to design and size the system, install and maintain it. They carry all the appropriate hazardous waste permits to transport and regenerate the resin tanks, and can pick up/deliver the tanks in their own trucks and perform the entire regeneration process themselves. When the process tanks in the line require changing out, they can be drummed up and sent out for proper disposal, at modest cost, through SIEMENS Corp. 

LUMICLAD® Process Lines Are Available, from BIRCHWOOD CASEY, at Low CostFor example, a standard LUMICLAD BC40 Tank Line can process up to 1,500 pounds of work per shift and would utilize a series of 40-gallon tanks, each measuring 16" x 24" x 24" deep. When supplied with the necessary chemical products and Ion Exchange System, the BC40 tank line sells for about $22,000.The BC100 Tank Line is rated for up to 4,000 pounds of work per shift, utilizing a series of 100-gallon tanks, each measuring 24" x 40" x 28.5" deep. When supplied with the necessary chemical products and Ion Exchange System, the cost is about $37,000.Details of these process lines are available in our price proposals. 

@@@@

A comparison of LUMICLAD® Electroless Black Oxide 
and Conventional Type II Black Anodizing

FINISH QUALITY

LUMICLAD Black Oxide

TYPE II BLACK ANODIZING

Durable, satin black molybdenum oxide

Durable, satin black aluminum oxide

0.000060" thick (1.5 microns)

0.0004"-0.001" thick (10-25 microns)

Smooth, clean, scratch resistant

Smooth, clean, scratch resistant

Durable finish: excellent handling properties

Very hard, durable finish

Finish same hardness as base metal

Finish harder than base metal

Interior or light exterior applications

Interior or light exterior applications

40-100 hours salt spray resistance depending on sealant used

336+ hours salt spray resistance

Non-compliant with Mil Specs (different chemistry used) Used primarily for sales appeal

Compliant with MIL-A-8625F

Electrically conductive

Electrically non-conductive

Good base for paint, adhesives

Good base for paint, adhesives

Black available only

Wide range of colors available

 

PROCESS LINE

LUMICLAD Black Oxide

TYPE II BLACK ANODIZING

Short process cycle: 30 minutes

Long process cycle: 45-180 minutes

7 tanks: one heated 

12-20 tanks: Five heated
One tank heated & chilled (68-72° F)

Electroless. No current flow needed.

Requires electrical current flow

Normal hook-style racks used.
(no electrical contact needed)

Parts require spring clamp racking
(non-conductive coating hinders contact)

Non-dimensional coating. No masking.

Some parts require masking to control dimensional changes

Basket/barrel processing easy, economical

Basket/barrel processing difficult/impossible

Easy to learn and operate effectively

Requires experienced operator

Uses Ion Exchange to re-cycle rinsewater
Zero-dis×ge operation.

Requires waste treatment for metal content
Compatible with normal waste treatment

 

OPERATING COSTS

LUMICLAD Black Oxide

TYPE II BLACK ANODIZING

Low cost – less than $.50 per square foot

High cost: $5.00-8.00 per square foot plus freight both ways.

 

CORPORATE CONCERNS

LUMICLAD Black Oxide

TYPE II BLACK ANODIZING

In-house LUMICLAD line:
30-minute turnaround
Streamlines workflow
Lowers inventory levels and costs
Accelerates shipment schedules
Allows for speedy customer service

Sending work out for anodizing:
Requires 3-4 day turnaround
Hinders workflow
Requires higher inventory levels
Slows shipment schedules
Makes key customers wait

 

PROCESS STEPS

LUMICLAD Black Oxide

TYPE II BLACK ANODIZING

  1. MICRO-ETCH CLEAN: Room Temp; 8 min 
  2. RINSE: 30 sec 
  3. APPLY PRIMER: Room Temp: 8 min 
  4. RINSE: 30 sec 
  5. BLACK OXIDE: 200° F; 10 min 
  6. RINSE: 30 sec 
  7. SEAL: Room Temp; 1 min 
  1. SOAK CLEAN: 160° F; 5 min 
  2. RINSE: 30 sec 
  3. CAUSTIC ETCH: 160° F; 1 min 
  4. RINSE: 30 sec 
  5. RINSE: 30 sec 
  6. DESMUT: Room Temp; 3-5 min 
  7. RINSE: 30 sec 
  8. RINSE: 30 sec 
  9. ANODIZE: 68-72° F; 15-60 min 
  10. RINSE: 30 sec 
  11. RINSE: 30 sec 
  12. DYE: 160°F; 5-30 min 
  13. RINSE: 30 sec 
  14. RINSE: 30 sec 
  15. SEAL: 190° F; 15-60 min 
  16. RINSE: 190° F; 5-15 min

One heated tank

Six heated/chilled tanks

30 minute Process Time

45-180 minute Process Time

No Rectifier needed

Rectifier needed: electrolytic reaction

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2010-01-07              
kuba            2楼




等级:略有小成
文章:26
积分:43
注册:2009-01-06

成本比阳极氧化低得多,不知道膜层的耐磨性和耐蚀性能否达到要求?
2010-01-07        
THJ711            3楼




等级:略有小成
文章:4
积分:23
注册:2010-01-06

因为形成的氧化膜较薄,所以其处理后的的硬度就是基材的硬度,耐蚀性40-100小时(盐雾)
 
想问问前辈们,该技术怎么样?
2010-01-08        
pengtu            4楼




等级:略有小成
文章:9
积分:25
注册:2009-02-16

英文看不太懂!楼主使用过吗?是哪里的技术?
2010-01-08        
THJ711            5楼




等级:略有小成
文章:4
积分:23
注册:2010-01-06

我使用过,技术是美国的!!不知道在国内市场如何?如果大家觉得可以,我想在国内推广!
2010-01-12        
THJ711            6楼




等级:略有小成
文章:4
积分:23
注册:2010-01-06

哎!!没有人能告诉我????
2010-01-20        
haier            7楼




等级:胸有成竹
文章:18
积分:63
注册:2010-01-22

看介绍应该有前途。如果想在国内推广,最好亲自与铝的其它装饰性处理做一下详细比较,除了分析成本、环保性外,还有其它各方面的性能。
2010-01-22        
  回复:大家觉得以下铝常温着黑色怎么样?…  
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