Titanium and titanium alloys are very important lightweight structural materials, widely used in aerospace, vehicle engineering, Titanium Plate biomedical and other fields, has always been the focus of material research. With the development of economy and technology, more and more titanium plates have been applied, Titanium Plate but the surface quality problem appears to be more prominent.

 

 

 

The surface defect of titanium plate has two kinds of conventional defect and non-conventional defect. Common defects are:

 

1, Scratch

 

Reasons: the guide plate, roller, Titanium Plate tools and rollers are not smooth, there are adhesion or angular burrs, such as rolling scratch surface, the operation is not careful, so that they collide to form scratch surface.

 

Measures: Before rolling to check the tool, Titanium Plate guide plate, roller and roll, and so on, found the problem in time to clear;

 

2. Metal Press

 

Reason: Edge burr and tail slag are pressed into the product surface.

 

Measures: To eliminate the burr and surface foreign body of slab in time. Split the Edge, split the head in time to cut off.

 

3. Non-Metallic indentation

 

Reason: Poor sanitation, dust foreign body fell on the surface of the workpiece, after pickling, cleaning is not clean.

 

Measures: To do a good job of sanitation, Titanium Plate timely removal of the surface of the workpiece adhesion.

 

4. Ma Keng Ma point

 

Reason: When the pressure orthopedic annealing, the plate or the surface of the plate has dust foreign body.

 

Measures: Remove the platen and the surface of the plate in time before entering the furnace.

 

5, Roll Mark

 

Cause: The surface of the roller is badly worn, with pits, pock, scratches, etc., and the surface of the roller is pressed out by the angle of the plate.

 

Measures: To find roller marks, to repair or replace the rollers.

 

Non-conventional defects are:

 

1, Table crack

 

Reason: Incoming material is unqualified, the surface crack does not clear clean or the incoming surface brittleness suction layer does not clear, in addition presses the procedure unreasonable, Titanium Plate the path processing rate is small, the road is too many, or the road processing rate distribution is unequal.

 

Measures: Strictly control the surface quality of incoming materials, distribute the machining rate rationally, ensure the slab annealing temperature uniformity and enhance rolling lubrication.

 

2. Acid Spot

 

Reason: One kind is pickling, the residue acid is not flushed cleanly, the plate dries forms. One is that when the sheet is annealed, the surface oxidation is uneven, and the corrosion degree of the surface after pickling is inconsistent.

 

Measures: Pickling must be clean, to ensure that the surface of the plate without residual acid drying, to reduce the stacking thickness, to ensure that the plate annealing uniformity.

 

With the development of science and technology, the application field of titanium is becoming more and more wide, such as medical, automotive, sports, etc., out by the reaction of these themes titanium as a kind of light metals, it has the good characteristics of more and more cognitive and can be set by people, and with the fastest speed into our production applications instead of other metals, even in our body.

 

With the development of science and technology, the application field of titanium is becoming more and more wide, such as medical, automotive, sports, etc., out by the reaction of these themes titanium as a kind of light metals, it has the good characteristics of more and more cognitive and can be set by people, and with the fastest speed into our production applications instead of other metals, even in our body.

 

missile and high-speed aircraft structure.60 s, titanium and its alloy has set up a file in the general industrial application, used for making electrode electrolysis industry, power plant condenser, oil refining and seawater desalination heater and environmental pollution control devices, etc.Titanium and its alloys have become an anticorrosive structure.It is also used in the production of hydrogen storage materials and shape memory alloys.China began research on titanium and titanium plates in 1956;In the mid-1960s, the industrial production of titanium was developed and TB2 alloy was developed.

 

Titanium plate is used in the aerospace industry is a new important structural materials, proportion, the intensity and the use of temperature between aluminum and steel, but better than high strength and excellent corrosion resistance to seawater and ultra-low temperature performance.In 1950, the United States first used the f-84 fighter-bomber as a non-bearing component, such as the rear fuselage heat shield, wind shield and tail cap.In the 1960s, the use of titanium plates shifted from the rear fuselage to the fuselage, partly replacing the structural steel frame.

 

China's large aircraft schemes, the goddess of the moon landing on the moon, the space station, nuclear power development plan as well as the national "twelfth five-year" development planning of new energy development, high-end equipment manufacturing industry support and encouragement, these provide the unprecedented development space for titanium plate strip and the historical opportunity, at the same time puts forward higher requirements on titanium plate strip.