As an abrasive, Lingao Youchanghua produces quartz sand and local diatomaceous earth, the latter of which is currently used as an abrasive for flat glass, but Lin Hanlong decided to use garnet abrasive. Because in this time and space, garnet abrasives are commonly used abrasives for optical lenses.

Lin Hanlong asked his apprentice to sift the milled powder through a coarse sieve first, and then gradually switch to a thinner and finer sieve for sifting. Most of the industrial screens used in abrasives are brought from the old time and space, and the high mesh industrial screens cannot be made in this time and space. The garnet powder separated by zuihou is then turned into an abrasive graded by particle size.

At the same time, Lin Hanlong set out to make special machinery for optical processing. He first used a pack of five South China Sea cigars = the price of the Chuqing limited edition to ask his colleague Sun Li in the machining workshop to work overtime to make a steel goblet called a spherical grinding disc, its inner wall is very precise out of the spherical shape, its radius is calculated in advance. The steel goblet is a key component of the spherical grinder, and the processing accuracy required is very high, so he did not dare to hand it over to the naturalized workers to make it, so he specially invited the veteran jishu personnel to make it - there are no mechanical jishu workers with a higher level than the veteran.

The spherical grinding disc should be rotated on a flat surface. The jishu content of the transmission system is not large, and it is enough to make a set of mechanisms like a bicycle and pedal through the gears. If you are a little more luxurious, you can also use the transmission of the power axis. However, the power to install and use the power axis must be applied for in advance, and Lin Hanlong is too lazy to apply for a report, so he simply goes directly to the human power system, and the power required is not much anyway.

Traversal is now very proficient in doing this kind of manpower-driven things, and there are ready-made equipment in the workshop. Spherical grinders also place the workpiece on a swing arm that rotates while swinging back and forth in the grinding disc. This also has a ready-made design, the mechanism is slightly more complicated, and the power is changed from the motor to the hand crank, which can be used improvised, but it is not uniform enough.

It took him three weeks to assemble the parts of the spherical grinder. Most of them are hardwood, with a small amount of steel. Hand-ground glass does not require much liliang, and the strength of the wooden structure is sufficient.

After finishing the processing machinery, there is also a way to accurately fix the glass. In order to do this, Lin Hanlong spent three days processing a series of molds and fixtures by himself. After everything was ready, Lin Hanlong dismantled the glass cylinder into a single piece of glass, wiped off the excess adhesive with an alcohol cotton, and then put it on an iron plate to heat it slowly. Wait for the glass to heat up, pick up the prepared haode fire paint and put it on the glass. The fire paint slowly melts under the heat, creating a smooth surface on the glass top. Lin Hanlong checked it and turned off the fire door of the small stove to let the iron plate cool down. After a while, the paint cooled down and the shape was completely fixed. Lin Hanlong took a hemispherical mold, and the top of this mold has been turned out of a plane. Heat the mold slowly, then pick up a piece of glass and place the fire paint side on top of the mold. After a while, the fire paint melts, quickly water the mold, so that the fire paint solidifies immediately. This is even if the workpiece is fixed to the mold.

The next work is similar to general machining, the mold is fixed to the chuck of the swing arm, and then the swing arm is introduced into the grinding disc. The coarse abrasive mixed with water has been added. He and his apprentice stepped on a bicycle and a hand-cranked one, and started the machine. After grinding for a while, lift the swing arm again to check the workpiece, see the effect of grinding, and then put it back. After a while, the two men swapped places. After more than an hour of tossing like this, the originally flat glass has been ground into a spherical surface. Lin Hanlong measured it for a long time with a ruler, and was sure that the accuracy of the spherical surface was tolerable, so he took down the workpiece and announced that he would leave work.

Another day passed, Lin Hanlong grinded the workpiece on one side, painted it on one side, and installed the mold, but this time it was replaced with a mold with a concave top. Half a night's work to polish the other side of the glass piece.

This time, Lin Hanlong's fiddling aroused everyone's interest, and several people stayed to watch the process of grinding glass pieces. The next morning, Zhong Lishi ran out of the laboratory where he hadn't been out for several weeks to find Lin Hanlong. He first looked at the grinding haode embryo, admired it, and then asked: "After this thing is made, the first sample will be handed over to the office for preservation, right?" It's memorable. In the future, you will set up an industrial exhibition hall, and this is the No. 1 collection of the optical museum. ”

Lin Hanlong shook his head: "It doesn't matter if you don't have a collection. I'm just going to make a pair of reading glasses for people to try on. ”

Chung was a little confused. "Who's old?"

"An indigenous. My apprentice's father. It's a pity that I can't do fine work when I'm old. ”

"Then you still have to work hard to apply to the Planning Institute for a pair, isn't it? There is a lot in the storeroom. Dr. Chung disagreed.

"How many can there be? The situation of naturalized people and indigenous shili presbyopia is still very common and in high demand. ”

"Oh. These reading glasses can also be sold for money in the future. Dr. Chung suddenly came up with a business idea. Although Dr. Chung is very knowledgeable and has the style of a five-car car, he knows very little about optics.

"Somebody has to try it out. If it's not done well, it's dizzying. ”

"Hmm. So be it. Can you make me one more piece, and I'll make you a gift. ”

"Gifts?" Lin Hanlong was tired for a while, he hated this kind of formalistic thing, and said hesitantly, "What kind of gifts are you doing every year?" ”

Dr. Chung smiled, "It's wonderful." ”

"Okay then."

After the conversation, Lin Hanlong was officially assigned the task of trial production of optical lenses, and he didn't have to do it himself after work. This is obviously Commissioner Zhong asked him to take out the product as soon as possible to "present", Lin Hanlong and his apprentices continued to work overtime, and within two days, all the eight pieces of raw materials were ground into wool embryos.

Coarse grinding is followed by fine grinding with finer abrasives. The original abrasive paste has been cleaned up by the apprentice, and new abrasives have been added. Lin Hanlong was more careful, and each batch of abrasive was sifted by the apprentice repeatedly to ensure that no too coarse particles were mixed inside. After grinding for a while, he will stop work, take out the workpiece and put it on the ruler to measure. Sometimes, he also went straight to the hands, using coarse felt dipped in abrasives to hand-finish uneven places.

In this way, it took a week to grind the eight blanks to the limit of the ruler measurement. Dr. Chung came to visit again, and this time he also brought the exhibition to the boundless. Zhan Wuya was full of praise for his products, and when he saw him so serious, he persuaded him: It's just reading glasses, and it can be cast directly in mass production in the old time and space, why be so accurate? Lin Hanlong replied that it was to accumulate experience in manufacturing more haode optical instruments in the future. Zhan Wuya shook his head and didn't say anything more.

There is only one polishing process left for the finished workpiece, but Lin Hanlong is worried. The polishing powder commonly used in the optical industry is a metal oxide with very fine particles, and the only metal material that Lingao can take out is iron. The metallurgical department says they are able to make iron oxides, but they won't make powders. The machinery factory has manufactured several billiard ball mills, which are used in cement, ceramics and other industries. But the sizes are relatively large. Lin Hanlong had no choice but to send the iron oxide raw materials to Xiao Bailang for grinding, but there were not many iron oxide particles that were delicate enough. In desperation, I had to use coarse felt stained with a limited amount of iron oxide powder to polish.

A few days later, Dr. Chung came back to see a few pieces of smooth glass glistening in the sunlight on Lim's workbench.

"Lao Lin, are you doing a good job!"

Lin Hanlong shook his head. "It's miserable." He said as he pulled out a box from a drawer: the lid of the box was printed with "Optical Inspection Tools". Opening the box, Lin Hanlong picked up a pair of clean cotton gauze gloves and put them on. He took out another piece of flannel and put it away, put a convex lens on the flannel, and then used a piece of flat glass to place it on the convex lens.

"Old Zhan, look at how good this interference ring is."

Zhong Lishi approached, and in the sunlight he could faintly see the shadows of the concentric rings on the flat glass. He knew that this was a phenomenon of light interference, but he had no idea exactly how to judge good or bad.

"Look at what I did." This time, Dr. Zhong took a lot of effort to see some of the chaotic shadows, "The overall deformation and distortion of the interference figure indicate that there are too many local deviations, and the proper ring can be said to be non-existent." ”

"This, it's the first time to do it, it's inevitable that you don't have experience." Zhong Lishi said as he picked up a piece of glass and put it in the sunlight to focus.

"Look at how small this spot is. I think it's doing a great job. ”

"Accuracy still needs to be improved."

"What kind of accuracy are you going to improve?"

"By the standards of the optical industry, within a quarter of a wavelength."

Zhong Lishi almost fell headlong on the table: "Are you mistaken! The light ** length is calculated in nanometers! ”

"Yes. That's what standards are. ”

"It's the 17th century! Would you please follow the standards of the 17th century? What do you do by modern standards? Scrap? Scrap is not as good as it, right? ”

Lin Hanlong was silent.

"Can this thing be used as a telescope? Can a 17th-century standard telescope be done? ”

"That's definitely a big exceedance."

"That's fine, I think you're doing a good job." Zhong Lishi patted Lin Hanlong on the shoulder, "Let's wrap up these and go to the Senate as a gift." ”

Lin Hanlong was appointed as the chief engineer in optics on the same day, specializing in the research and development and manufacturing of various optical products. This title means that he has a formal line of reference, and is not an ordinary veteran engineer in the past. The establishment of the optical factory was also included in the agenda of the executive committee, and for Lin Hanlong, the biggest change for a while was that there was an older skilled worker in the workshop, who was his apprentice Cai Junjie's father Cai Shengjie, and the names of the father and son were obtained by him, originally they were called Cai Da and Cai Thirty.

Lin Hanlong was embarrassed to let Cai Shengjie, who was much older than him, call him his master, so he just asked him to be a worker in the optical workshop. Cai Shengjie is a very skilled coppersmith - the coppersmith is roughly the role of a fitter among traditional craftsmen, doing hardware processing and repair work. Therefore, when the fitter was first introduced to China, it was called "foreign coppersmith".

Cai Shengjie lost his ability to work in the past because of old eyes, and could only be an ordinary laborer. Now with the reading glasses made by Lin Hanlong, I can return to the front line of work.

Of course, being a jishu worker earns much more than a laborer without jishu content, and his craftsmanship is very appreciated by Lin Hanlong, so Cai Shengjie's work is very energetic. I didn't care about working with Lin Hanlong until late at night every day, and I came to work in the workshop at six o'clock the next morning.

Bairen Industrial Zone at four o'clock in the afternoon. It was still early for the day shift workers to leave work, and there were not many people on the street. After the victory of Chengmai, the soldiers of the Fubo Army, who had been patrolling with guns and ammunition, had disappeared, and only the "workers' pickets" carrying sticks and sticks, wearing work hats and "picket" armbands came over in groups of five.

The workers' pickets are a security organization composed mainly of workers' militia, which patrols the industrial zone in shifts every morning and evening. Their authority is limited to patrolling and conducting inventory inspections in industrial zones. With the vigorous development of the industrial zone, the number of theft cases in the industrial zone has also begun to increase.

Despite the severity of Lingao's laws, thefts were deported to labor camps for six months if they were caught at the least. The heaviest should be sent to Sanya for mining. However, the large number of products and production raw materials in the industrial zone attracted a large number of people who wanted to make a windfall: after the Qiongzhou strategy was roughly over, the population from other counties began to flow into Lingao in large numbers in search of more lucrative job opportunities, including of course many "loafers" who did not do their jobs. As a result, the orderly society that was previously tightly controlled by Lingao was caught off guard, and the number of public security incidents rose sharply for a time. To this end, while strengthening policing, Ran Demon began to reinstate the system of day and night patrols of workers' pickets that had been adopted during the preparation for war.

The three men turned around the corner and strode towards the factory gate. The leader is none other than Lin Hanlong. He was dressed as a Chinese migrant worker in the early 21st century, wearing a camouflage sweatshirt and carrying a bulging black canvas bag over his shoulder, which was also a cheap computer bag common on the streets of the early 21st century. Wearing a wide-brimmed wicker helmet for shade. Two people in blue overalls followed. Both of them were carrying half-used yellow-green satchels, which were already mottled in color. The old one holds a large oil-paper umbrella in his hand, and the small one carries a bamboo tube in his hand.

After a while, the three of them had already walked to the south gate of the factory area. There was originally a turret arch here. When the situation was tense before the second anti-encirclement and suppression, two gates were built inside the gate, which was the same as that of the urn city. People who come to work enter the first gate as if they have passed through airport security, lined up along the railing, and can only be put in after a body search. On the top of the second gate, there were soldiers with guns staring at the crowd.

Now the second gate is still there, and the soldiers and the search procedures are gone. Both doors are open during rush hour, and only a few guards keep an eye on the crowd of people entering and leaving. It's not the end of the day, and no one is at the gate. Lin Hanlong took out his pass, and the two attendants behind him also took out their own bamboo board badges. The guards didn't stop them, just looked at the time and made a few notes in the entry and exit register.

There is a track system in the industrial zone for transporting workers and equipment and supplies. The original gas locomotive has been officially replaced with a steam locomotive, and the Meteor No. 2 is whirring and pulling the wagon of the open car, driving at a speed of 10~20 kilometers on the track.

The steaming front of the locomotive, the criss-crossing railroad tracks, the ironwood frame footbridge overhead of the road, and the people in blue overalls on the road and wagons form a crude, but concrete and microcosm of industrialization. The whistle sounded one after another, and the loudspeaker in the factory area kept playing music: "We Workers Have Liliang" and other repertoire included in the "hymn" by the Ministry of Culture and Propaganda. From time to time, there will be a high-pitched but non-standard Mandarin broadcast by a female announcer from the loudspeaker, and the content is nothing more than what new achievements a certain workshop has made today, and which worker has broken through the production quota...... It constitutes a chaotic but vibrant industrial sound.

Lin Hanlong took his footsteps on the No. 6 platform at the gate of the factory, and habitually looked at the stop sign: The Ministry of Science and Technology is a station of zuihou,

The commuter train is once every 15 minutes, in addition to pulling people and loading goods. The small open car carrying passengers was very simple, except for the guardrails around the open car and two rows of wooden benches. Sitting on it, you can fully enjoy the noise of the factory and the smell of soot.

Lin Hanlong, like many veterans who work in industrial areas, usually takes the small train in the factory area or simply walks or rides, not to deliberately express "close to the people", but just the habits they brought from the old time and space.

After getting off the train at the Ministry of Science and Technology Station, Lin Hanlong walked for about ten minutes to come to a factory building, and the sign on the door of the factory was painted on a white background and black paint that read "Ministry of Science and Technology Optical Shiyan Factory". This is the location of the new optical industry approved by the Executive Committee, and the person in charge is Lin Hanlong. It is said that the optical factory is actually a workshop.

The Ministry of Science and Technology originally had several vacant workshops, Lin Hanlong chose a suitable area, and first found a construction company to "decorate" the interior, which was actually to separate the internal space and install a number of special equipment. Then he installed the machinery and equipment made for him by the machine factory one by one.

It's also small-scale.

There were not many people in the workshop. Light is cast from rows of windows near the roof. It looks pretty bright. The workshop was quiet - the optical factory was not officially operating yet, and it was basically running according to Lin Hanlong's schedule. Lin Hanlong attended several meetings of the Workers' Energy Committee this morning to discuss the Jishu route, and in the afternoon he went to the machinery factory to help solve some problems. It was almost three o'clock before it ended. Only then did he turn his attention to the work of the optical factory.

Walking into the workshop, he noticed that the valve of the gas lamp was closed. Two days ago, a night shift worker in a workshop did not turn off the gas lamp valve when he left work in the morning, and the result became a typical example in the "Safety Bulletin". Safety education must be grasped often.