At this moment, Chen Lao Wu's expression also became extremely solemn. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

He threw the bow into the furnace again.

While calcining, he quickly rotated the bow in the fire, trying to heat it evenly.

Li Xun also stared intently at the bow body, and his expression became a little nervous unnaturally again.

Li Xun actually knew in his heart that there were many difficulties in this fitting process.

First of all, the beryllium copper bow body should be heated, and in order to expand and shrink the heat to meet the needs of the ash bow body, the temperature should not be too low.

If the temperature of the beryllium copper bow is too low, the expansion is not enough, and the ash wood bow body cannot be perfectly embedded in the beryllium copper bow body, let alone fit tightly together after the beryllium copper bow body is cold and contracted.

Once the temperature of the beryllium copper bow body is increased to a relatively high level, it will not be able to make the beryllium copper bow body fit with the ash bow body by self-cooling.

Because no matter what, the ash bow body is a wooden bow body after all, and it is closely fitted with the high-temperature beryllium copper bow body for a long time, waiting for it to cool down naturally, which will inevitably destroy the material of the ash bow itself, and then affect the elasticity and strength of the whole bow.

Therefore, after the two fit, the bow body can only be cooled by immersing it in cold water, so that the bow body can quickly shrink, and on the basis of not destroying the ash wood material, in order to achieve a perfect fit.

This method of using cold water to cool down, in simple terms, is actually quenching.

Since it is quenching, this involves another problem, that is, the beryllium copper bow itself has an optimal quenching temperature, which is between 315 degrees and 600 degrees.

If this temperature range is not reached, even if the beryllium copper bow body and the ash wood bow body fit perfectly, but the beryllium copper bow body itself is not quenched at the optimal temperature, then the hardness and other indicators of the beryllium copper bow body will inevitably be affected, and it will also affect the perfection of the combined bow body.

But even 315 degrees Celsius, the lowest beryllium copper quenching temperature, is already a very high temperature for the ash bow body, and challenging the perfect fit of the two at this temperature requires the operator to have extremely skillful skills.

Of course, you also need to have a very good control over the temperature.

The higher the temperature above 315 degrees, the more likely it is to cause fatal damage to the ash bow body.

If the temperature is below 315 degrees, the final quenching will not be perfect.

This is also a dilemma.

Only when the above and many other problems are perfectly solved, can the perfect sky-shaking bow body be created in the end.

Just imagine it, and you know how difficult it is.

Therefore, although Li Xun has some confidence in Chen Lao Wu, he is also very nervous in his heart.

It's not just a combination of factors that make the process very difficult, and if you make a mistake at any point in between, the new Sky Shaking Bow won't be perfect.

And because in the process of chasing the master's transfer, it is necessary to calcinate the new and old bow bodies in the same furnace fire in order to retain and transfer the thousand-year-old murderous aura of the bow body to the greatest extent, so Chen Laowu and Li Xun cannot build the whole new sky-shaking bow in advance, and then ask the chasing master to move when the preparation is complete.

Otherwise, after perfecting the new bow body of the Heaven-Shaking Bow in advance, and then asking the chaser to move, the process will undoubtedly be much simpler, and it will not be as difficult as it is now.

Not to mention the worry in Li Xun's heart, these thoughts flashed, Chen Lao Wu on the edge of the iron furnace still stared intently at the bow in the iron furnace.

At this moment, he yelled, "Get up!"

Then he pinched the bow with all his might, and dragged it out of the furnace.

Several Chen family disciples came up to help, carrying the fiery bow body to a special shelf on the side.

Underneath the shelf is a sink of cold water.

At the other end of the shelf, there lies an ash bow.

In fact, to the naked eye, although the beryllium copper bow body is heated and expanded, the size of the two bows of different materials is still not much different.

The degree of expansion of thermal expansion and cold contraction is not as large as imagined.

After Chen Laowu put the beryllium copper bow body, he took a long breath, looked back at Li Xun, and said: "The temperature of the beryllium copper bow is about 330 degrees now, and when it naturally cools down to 315 degrees, there is still some time, but I can't control the temperature 100% accurately, so this 330 degrees is the limit temperature I can reach." ”

Li Xun nodded calmly.

At this moment, it was already a critical moment to perfectly fit the two bow bodies, and Li Xun, who was originally a little nervous, became inexplicably calm.

For the sake of safety, Chen Lao Wu can't perfectly control the temperature of 315 degrees, but it's almost there.

Li Xun replied: "But in fact, we don't have much time, especially after the two contact, we operate for too long, and the ash bow will be scorched." ”

"Yes, so the shorter this time, the better, this thing, only the two of us can do it, you have divine power, I have skills, the two of us can cooperate perfectly, others can't interfere. ”

"Good. ”

In fact, Chen Lao Wu did not dare to let other Chen family disciples interfere.

This is too critical a moment for the slightest mistake.

Chen Lao Wu handed Li Xun two special pliers, then pointed to the beryllium copper bow body, and said: "There are four key points on the bow body, which are two bow angle positions, and then these two convex points in the middle of the bow body. ”

Li Xun looked at the point indicated by Chen Lao Wu, and nodded calmly.

Then, Chen Lao Wu began to manipulate the two bow bodies.

He carefully placed the ash bow two centimeters away from the beryllium copper bow.

At this time, it can be seen more and more that although the beryllium copper bow body is heated, it is really not much bigger than the ash wood bow body.

Originally, when Chen Hongru's factory was building these bow bodies, it was obviously perfectly calculated, and the accuracy between the parts of each bow body was outrageous.

After all, the bow body has thick and thin, thick in the middle, thin at both ends, and bends at various angles, even if it is also in the middle of the handshake part, because of the different positions, the parts are slightly thick, so this calculation must be extremely accurate, if there is a part wrong, the whole bow body can not be perfectly combined.

It is precisely because of the various curvatures of the recurve bow itself, so once the beryllium copper bow body is cold and contracted, the two can indeed fit perfectly beyond imagination.

Chen Lao Wu arranged his bow, glanced back at Li Xun, and said, "Let's start." ”

Li Xun nodded.

Then the two of them picked up the two pliers in their hands together.

"I count one, two, three, let's work together, and don't let go after clamping. Chen Lao Wu said again.

Then he began to count.

"One...... Two...... Three!"

Almost at the same moment, Li Xun and Chen Lao Wu both worked at the same time.

The two different bows, which were originally about two centimeters away, were tightly fitted together at the point where their four pincers were gripped.

"Sneer......"

The temperature of more than 315 degrees still made the ash bow and made a soft scorching sound.

Li Xun and Chen Lao Wu were unmoved.

The two nervously surveyed around the bow.

The current time can be described as a race against time.

They had to inspect the two bows as fast as possible to see if they were perfectly in line with each other as planned. (To be continued.) )