Yang Jie then came to the small workshop for the production of propellants, which has a series of precision processing equipment, which will be extruded into various shapes by ultrasonic crushing and fine grinding, and in order to eliminate the internal stress of these pills, high-frequency vibration equipment will also be used to eliminate the stress.

After being processed by these devices, the material inside these propellant pills is very uniform, and the combustion rate can be controlled very accurately, and the combustion rate of these different shapes of propellant is also different, so that different types of projectiles can be made.

Yang Jie has also seen the propellant produced by the domestic bullet factory before, the process is really poor, the uniformity of the particles of the same batch of propellant is very bad, and the sphericity is also very poor, compared with the propellant of foreign bullets, you can see a lot of differences at a glance.

Huaxing Group can produce high-precision processing equipment by itself, and it is naturally not a problem to customize these equipment, and the pills processed by these equipment have better uniformity than those produced in Europe, America and Russia.

Yang Jie had also consulted some experts in this area at home and abroad before, and he also knew that high-quality propellants could ensure the stability of ballistics, and he was naturally quite happy to see these high-quality pills.

Then he also came to the bullet production workshop, the workshop is full of brand-new equipment, and also adopts a new process, which is also a popular process method abroad, which is to wrap the armor from back to front, and finally leave a small hole at the tip of the bullet, this kind of bullet is also called open tip bullet, the deformation of the bullet core will be greatly reduced, which is conducive to improving the shooting accuracy.

In order to master this process, Yang Jie also invited an engineer from a foreign ammunition factory to help complete it, and it also cost a sum of money.

At the same time, the bullet research and development department is also conducting research on the material of the warhead and the shell, is trial-producing tungsten alloy and lead warheads, and is working the shape of the warhead, and is doing research and development on the design of the geometric center of gravity and mass center of gravity of the warhead shell, bullet core, quilt and other components.

Moreover, in the production process, precision measuring instruments are used to ensure that the coaxiality of the bullet head and the cartridge case is kept in a straight line when the bullet is assembled.

Although the technology of bullets has long been mature, it is not easy to make it well, since Yang Jie wants to design and produce good light weapons, these details will naturally not be ignored.

He is also the R&D center to make a research and development task of ballistic optimization plan, and make technical reserves for new caliber weapons and ammunition.

Yang Jie hopes that the R&D center can come up with high-quality products, aiming at the firearms used by the police at home and abroad, in order to attract attention, he began to let Lu Yonghua design a 7.62 mm high-precision sniper rifle last year, up to now, this sniper rifle has been designed, high-precision special bullets have also been trial-produced, and the R&D center is also conducting trial production, which will come out soon.

Yang Jie also came to this production line dedicated to the production of high-precision sniper rifles.

In the barrel production workshop, Yang Jie also saw that the staff was testing the specifications and dimensions of the high-grade stainless steel blanks sent over, and the staff would use a metallographic microscope to inspect the stainless steel pipes of these blanks.

These blanks will be processed only if the grains on the surface of the fracture tissue sampled from these stainless steels meet the specified conditions in terms of quantity, morphology, size, distribution, orientation, spatial arrangement, etc.

These stainless steel pipes are all high-grade stainless steel provided by the metallurgical plant under Zhongyuan Automobile Company, which is very suitable for the production of gun barrels.

These inspected barrels are sent to machines that draw the barrel rifling for processing.

The machinery and equipment for drawing the rifling of the barrel are imported from Germany, although Huaxing Group can also design and manufacture it itself, but there is no need for that, and this German manufacturer has been designing and producing this equipment for many years, has rich experience, and many gun factories are also using this equipment.

In order to produce in large quantities, the domestic gunsmiths began to use the precision forging technology in the seventies to make the barrel rifled to form at one time, and after nearly 30 years of technical accumulation, it now has rich experience in precision forging, and can be engaged in the rifling precision forging of large, medium and small-caliber barrels and small-caliber barrels.

The process of this barrel precision forging is to insert a rifled mandrel in the tube, and smash it with a special hammer outside the tube, although the yield is high and the speed is fast, but any metal that has been smashed by the hammer over tens of thousands of times will produce internal stress, if the stress is not eliminated, the inside of the barrel will be deformed, especially when the barrel vibrates when shooting, the vibration frequency will be disordered, and the accuracy of the warhead cannot be guaranteed at all.

Type 03 is because the barrel is not straight, which will cause the warhead to hang copper, and the reason why the barrel is overheated, the accuracy naturally does not need to think about how good it will be.

A well-forged barrel like this is suitable for the production of artillery and the like, but it is not suitable for the manufacture of high-precision sniper rifles.

Since Yang Jie wants to design and produce high-precision police sniper rifles, he will naturally never use this method of manufacturing rifling.

Making a gun barrel is a delicate job, just to make a straight deep hole in a steel rod, it is not easy to say, to do it has to take into account all aspects, the feed angle of the drill bit, the speed of rotation of the workpiece, the pressure of the lubricating oil, and even the chuck of the steel rod must ensure the concentricity of the steel rod and the drill bit.

Thanks to the fact that the machine tool research has a very deep foundation in this regard, the accuracy of these punched blanks sent over is very high.

Just such a punching technology, at present, even the world powers like the third brother have not conquered this technology, and the third brother's self-made Insas has killed more people because of the explosion than this kind of gun.

Of course, this is also related to the fact that the third brother is not up to par with this high-grade stainless steel material, and the barrel is very easy to explode if the toughness is not enough.

After determining the size of the warhead, the winding distance of the rifling can be determined to maintain the stability of the warhead, otherwise there will be a situation of somersaults, and the shape of the keyhole will be produced on the target paper.

Lu Yonghua has a very deep foundation in this regard, even if the winding distance has been determined, the technician has also set the speed of the machine to slowly draw the rifling, and the machine runs very smoothly, constantly pouring lubricating oil.

After the rifling is drawn, the technician removes the grease and begins an endoscopic examination to see if the drawn rifling is normal and whether there are any scars on the inside of the barrel.

The barrel is also machined with different CNC machines, and it is only after all these production steps that a high-quality barrel can be produced.

The CNC machine used here is very precise, with a machining accuracy of 0.002 mm, and the barrel produced is like a mirror, and it takes at least three hours to complete the production of a rifle barrel.

However, these processes have not been compiled for a long time, and the efficiency can still be improved if they are mass-produced.

Then he went to the firing module workshop, where several female technicians in their thirties were in charge of processing, using some special equipment used to process jewelry, which was very precise, and especially required care and patience, so the work was undertaken by female employees.

These firing module modules are basically processed by the wire EDM shop using a mature and precise wire EDM process.

Because wire cutting can cut out parts with very special shapes by changing the angle of the wire at any time, multiple steel plates are welded and cut together during processing, which can ensure the identity of the parts and improve work efficiency.

Yang Jie transferred experienced technicians, so after Lu Yonghua's design drawings came out, these technicians quickly compiled the processing technology and determined the tolerance of the parts.

Because most of the technicians were previously engaged in precision machine machining, the parts produced by these are extremely accurate.

Come to think of it, these technicians used to either produce high-precision machine tools or precision parts, which is naturally not particularly difficult for them.

Huaxing Group Company's Zhongyuan Automobile Company, Chenxi Machinery Factory, Machine Tool Research Institute has trained a large number of senior technicians in machining over the years, and the total number of middle and senior technicians is almost tens of thousands.