Why lanthanum molybdenum alloy wire is the mainstream wire cutting electrode wire?
Why lanthanum molybdenum alloy wire is the mainstream wire cutting electrode wire? There is a set of research data to tell you later. We start from the wire cutting industry "six hope". Wire cutting boss spread so six expectations: a look forward to continuous silk; Two hope liquid does not change; Three pan electric meter does not operate; Four hope rent halve; Waiting for the sun to never set; Six hope machine revolution over ten thousand! However, the old master and the little master of wire cutting have said after hearing, not to mention the "five hope" behind, we first realized the "first hope", that is, such as "electrode wire is not easily broken" to achieve, and then on other.
Talking about wire cutting electrode wire, you must be old master and small master also know that wire cutting electrode wire mainly has molybdenum wire and copper wire. Choose molybdenum wire, or choose copper wire, it depends on what car is driving, is low speed slow walk, or high speed fast walk, or super high speed in the walk? Open slow walk wire (low speed walk wire), with copper wire; Open wire (high speed wire) and medium wire, molybdenum wire is used. We are not talking about copper wire today, but molybdenum wire.
Nowadays, molybdenum wire has been widely used in modern mold processing. Therefore, it plays an increasingly important role in molybdenum deep processing industry. Among them, at present, the molybdenum wire used in edM is mainly pure molybdenum wire and molybdenum lanthanum alloy wire. This is a little tricky, because when there is something greater than 1 (only integers), it is often a choice. So, how to choose molybdenum wire for wire cutting electrode wire? It is necessary to understand the requirements of wire cutting on molybdenum wire.
The requirements of wire cutting molybdenum wire are mainly reflected in breakage rate, discharge efficiency and material loss. By improving discharge efficiency and reducing material loss, the broken rate of molybdenum wire can be reduced and its comprehensive use value can be improved. The quality performance of molybdenum wire includes ductility, electrical conductivity, electron escape work, tensile strength, impact resistance and corrosion resistance. Some small master said, how to say, this is a bit too general, there is no reliable comparison data support, so, or do not know how to choose. That's where researchers come in, the authors say, because the data "speaks for itself" and there's usually no cheating.
Some researchers took pure molybdenum electrode wire (pure molybdenum wire) and lanthanum molybdenum electrode wire (lanthanum molybdenum alloy wire) as experimental objects, respectively tested their performance under the same edM machining conditions, and found that:
1.0 Due to arc discharge, the brittle fracture of pure molybdenum wire occurs when the operating temperature exceeds 1200℃, while the brittle fracture of lanthanum molybdenum alloy wire occurs when the operating temperature exceeds 1400℃. This is mainly about the high temperature performance of electrode wire.
2.0 Continuously moving molybdenum wire is easy to be broken due to insufficient strength. When φ=0.18mm, the tensile strength of pure molybdenum wire is 1800-2200N /mm2, while that of lanthanum molybdenum alloy wire is 1900-2300N /mm2. This is mainly about the strength of the electrode wire.
3.0 When φ=0.18mm, the metal cutting capacity of pure molybdenum wire is about 4000mm2/h, while that of lanthanum molybdenum alloy wire is about 4500mm2/h. This is mainly about the discharge performance of the electrode wire.
4.0 When φ=0.18mm, the diameter loss of pure molybdenum wire is about 0.0006875mm/h, while the diameter loss of lanthanum molybdenum alloy wire is about 0.0006565mm/h. This is mainly about the anti-damage performance of the electrode wire.
5.0 When φ=0.18mm, the average cutting amount of pure molybdenum wire and lanthanum molybdenum alloy wire reaches 200,000 mm2 and 300,000 mm2 in a single feeding, the electrode wire will break or lose seriously and need to be replaced. This is mainly about the overall performance of the electrode wire.
From the above data, the overall performance of lanthanum molybdenum alloy wire is better than pure molybdenum wire, therefore, the mainstream use of wire cutting electrode wire on the market should be lanthanum molybdenum alloy wire. However, one thing should not be said is that at present, in the cutting industry, lanthanum molybdenum alloy wire still exists a high wire breaking rate, low cutting efficiency, service life is not so long and other problems.
