This domestically produced titanium alloy is a treasure of the Ministry of Machinery. my country's titanium alloy research originated in 1956, with Wei Zuye as the director, and a group of foreign students majoring in metal processing who returned from Big Brother. , and a group of university graduates such as Academician Cao Chunxiao, established the Sijiucheng Aeronautical Materials Research Institute. This institute is also one of the 156 projects assisted by Big Brother and is very valued.

The next year, Professor Yan Minggao, who returned from the United States, became the director of the Titanium Alloy Laboratory. In 1960, he led Academician Cao Chunxiao to develop T-4 thin plates and processed them into propeller blades.

In 1965, Cao Chunxiao was transferred to Room 15 of the institute and began to study the use of titanium instead of steel in aircraft engines, and received a project fee of 1.05 million.

Thinking that this happened at the beginning of Siheyuan, it was an astronomical sum!

Even for Silly Zhu, his annual salary is only five hundred yuan. This amount of money is the annual salary of two thousand skilled workers!

Academician Cao Xiaoguang lived up to expectations and quickly smelted a batch of Ti-6Al-4V metal ingots. This is my country's first-generation titanium alloy code-named TC4.

And after going through four stages of casting, forging, machining, and inspection, they took it to the 420 Factory, which makes aero-engines, and made more than a hundred pieces of first-stage compressor rotor blades for the turbojet 6 engine, and successfully passed the engine test run.

Test.

In the next ten years, after ten years of painstaking experiments, Academician Cao finally explored the use of high and low temperature staggered heating to solve the problem of uneven grains of titanium alloys.

In fact, for this problem of materials, theoretical calculations are almost useless and can only be solved by long-term practice. Long Guo’s so-called insufficient accumulation probably means insufficient experiments.

In 1979, in order to develop the J-8, Longguo began to study the turbojet 13 engine, which was used to manufacture the third to eighth-stage compressor discs, rotor blades and first to seventh-stage stator blades. Because Longguo’s titanium alloy did not meet the

When the performance requirements are met, I plan to spend five million US dollars to buy and sell foreign titanium alloys.

At this time, grain was only a dime per catty, and five million US dollars was equivalent to at least 100 million catties of grain!

Academician Cao couldn't bear to exchange 100 million kilograms of grain for five million US dollars of titanium alloy, so he went to the Anda Forging Factory in Guizhou Province and spent two years successfully developing TC11 titanium alloy.

Then, Academician Cao overcame the processing difficulties and developed a high-temperature furnace capable of melting TC11 titanium alloy, achieving mass production of titanium alloy.

Because of this major achievement, even Boeing and McDonnell Douglas ordered titanium alloys from China. Not only did they save US$5 million, but by 1985, Anda Factory's own output value had increased by US$30 million.

Anda Factory is now a major exporter in the aviation system!

But now the Anda factory's output exceeds demand. After all, apart from aircraft, there are not many places where titanium alloys can be used.

Li Sanbiao quickly flew to Magic City and spoke to their sales representative, who received an immediate response.

The leaders of Anda Factory immediately stated that they can provide them with these two titanium alloys. The only condition is to mention their names in advertisements and let them open up the international market.

After Li Sanbiao took care of An Dachang, he came to the Hero Pen Factory in Shanghai.

People in the 1980s and 1990s should all have an impression of this number one domestic brand, and the current Hero Pen Factory is in its heyday!

At this time, many people will insert one or two pens in the upper left pocket of their jacket. Of course, not just everyone is qualified to do this.

Those who can put pens in their jacket pockets are either government officials or teachers. Of course, cultural figures such as journalists and writers are more qualified!

Today's tailors, when making clothes, usually make an opening on the right side of the upper left pocket opening. The function is to insert the pen upright there, which can prevent the pen from loosening, that is, the pen water will flow out due to shaking!

There are many famous brands now, including Honggui, Yongsheng, Dadong, Jiefang, Venus, etc., all of which are strong and durable. Of course, the best one is the Hero pen, the undisputed number one brand.

If you wear a Hero brand pen, you will have more face!

The cheapest pen is generally called the 26-type pen, which is made of plastic shell. All brands are similar. It has a brown-green pen body, a silver cap, and a plastic suction bag to absorb ink

Although it looks very ugly, it usually costs five or six yuan, and it can usually be used for a year or two without any problems.

Gold pens and iridium gold pens are high-priced products. They generally have to be made to be a little heavier, and the pen body is also much more delicate. Anyone with a little ink in their belly will have to buy one to look stylish.

Common models of gold pens and iridium gold pens include the 73-type white feather automatic water-absorbing iridium gold pen, the 81-type Guanleming gold pen, the 100 and 121 hero gold pens, the 571 hero gold set gold pen, the 201 eternal gold pen, and the 303 youth iridium pen.

Gold pens, type 616 hero iridium gold pen, type 204 Xinhua iridium gold pen, type 319 Venus iridium gold pen, type 404 Southern iridium gold pen, type 215 bright gold pen and type 258 happiness gold pen, etc., are all high-end products of various brands.

To be honest, Li Sanbiao didn't believe that ordinary pens couldn't be made more beautiful. Maybe this pen had the attribute of luxury goods before liberation, and it has been used as a status symbol ever since.

Of course, some people use Parker gold pens, which are symbols of people like Wang Husheng or the Lou family. No one dared to use them in the 1960s and 1970s.

Domestic pens are still considered valuable stationery, especially gold pens. At this time, there are shops in shopping malls or roadside stalls that specialize in repairing pens, and they only charge 50 cents. If you need to replace the nib with an ordinary pen, it will cost an additional 50 cents.

But gold pens are expensive. Li Sanbiao had a hero gold pen. After it broke, he went to have it repaired with gold. It was already the 1990s. Although major shopping malls still have repair counters, where old people who repair watches and other precision items gather...

Masters, but there are really not many masters who repair pens. They can only be found in Chang'an Shopping Mall.

The master carefully clamped the pen into a mold,

He picked up a piece of gold wire and melted it with an alcohol blowtorch. At that time, Li Sanbiao was stunned and wondered how much it would cost.

Anyone who wants to repair a fountain pen just picks up a little bit with a needle and dips it into the nib.

After the little gold had cooled down, he gently polished it with fine sandpaper. When Li Sanbiao tried it, the pen was indeed good again. In his impression, this heroic gold pen had to be used for more than ten years before it broke.
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Even in 2000, there were no roller pens yet, and it was still popular to write letters to each other, and even after the advent of telephones, letters would still be written.

Therefore, starting from 1983, sooner or later the pen can be used for another twenty years,

When the leader of the Hero Gold Pen Factory saw Li Sanbiao's business card, he said he was the owner of the Eagle King Gold Pen Factory and thought he was the director of a small factory in a township.

The factory leader wondered: "Do you know how much a gold pen costs? The cheapest one costs fifteen yuan, and expensive ones cost hundreds. How can anyone buy a gold pen from your small county-level factory? Besides, it seems like
Chapter completed!