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Dongguan Jiayuan Hardware Products Co.,Ltd
Add:Dongguan, Guangdong, China, Changan Town, Xin'an Town, Community Village, B, No.4 Gate, Lam Tin Industrial Park, Lam Tin Road
Tel:+86-769-85316356
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Surface Cold Forging

Surface Cold Forging

The earliest human production (two forming processes, exactly from raw materials to product parts), is the combination of cold, cold or stamping and cold forging.

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Title: Surface  cold forging

Description: The earliest human production (two forming processes, exactly from raw materials to product parts), is the combination of cold, cold or stamping and cold forging.

In one of the ancient civilizations of the world China: the pottery making process appeared in the primitive society; the Shang Dynasty, developed into the slave society, had entered a period of prosperity of the bronze age; in the presence of smelting and casting, including copper and bronze, many kinds of copper were made. Technology and iron products have also been widely applied.

Professor Kudo Wise, a Japanese scholar, gave an evaluation at his lecture at Harbin Institute of Technology in 1980, suggesting that the cold forging and cold pressure processing in ancient China were earlier than that in Egypt.

According to the following important examples given in the relevant documents, we can understand the development of cold pressing in ancient times.

Item:

Surface cold forging

Process:

cold forging

Available materials

Aluminum, Stainless, steel, brass

Tolerance

+/-0.3~+/-2 mm

Pressing Capacity:

10-200tons

DRW format

.jpg/.pdf/.dxf/.dwg/.igs./.stp/x_t. etc

quality system certification:

Iso 9001/9002, SA8000

Surface treatment:

Shot/sand blast, polishing, Surface passivation, Primer Painting , Powder coating, ED- Coating, Chromate Plating, zinc-plate, Dacromat coating, 

MOQ

1000pcs

QC System

QC reports, Qc inspection

Payment term

T/T, PayPal

Surface treatment

Electroplating ,Power Coating, oxidation

Shipment Terms:

15~20days lead time. By DHL/TNT/FedEx express, air freight etc.

Packing

Pallet or container to prevent from damage.

Lead time

5~25days

Cold pressing in ancient times

In the twentieth Century B.C. (in the Xia Dynasty of China), there was a cold forging of copper knife and chisel in China. In the Eleventh Century B.C. (China's Shang Dynasty), China had made gold boxes with cold methods. O. 01mm, the cold forging of bronze weapons. In ancient books, it is recorded that "Bei is a bow and arrow, and forging is a spear." The main idea is that the army should forge and grind the weapons such as gole before they start, so as to increase their hardness and sharpness.

From eleventh Century BC to seventh Century BC (Western Zhou Dynasty), China made many kinds of copper and iron utensil with cold forging method.

From 475 B.C. to 221 B.C. (during the Eastern Zhou and Warring States Periods of China), the Chinese made the copper scraps (containers) with the cold method. The copper thick wall is 1~2mm thick and divided into two halves.

Get up. There is a fine, smooth ripple on the body. As shown in Figure 0-1. The cold lap joint technology is also very brilliant, until now it is still a kind of jointing method.

In the first Century B.C., Celt people used models to stamp gold ingots into coins or ornaments. In the second Century, China made sword and sword with decorative steel. In the 11th century AD, China cold forged the self-defense "monkey's armor" and put forward a law to control the deformation of cold forging in the theory of metal plastic processing. Shen Kuo 0031~1095 in the Northern Song Dynasty of our country had a detailed record of "Jiang Shanduan a" in the book of "Meng Xi's pen talk". It narrated that the Qing Tang Jiang people had forged a thin, light, tough, hard and hard body of defense "cancer a" ":" to go to the 50 steps, the crossbow, can not enter. " "The method of forging armor is very thick. Without fire and cold forging, it is three points less than yuan thickness and two reduction. At the end, it should not be forged at the end, but it will be hidden like clusters. Such as dredge River to keep the soil simply. It is called 'cancer son a'. Starting from the study of the history of forging and forging, the "three subtraction and two subtraction of the specific element" is called the "deformation control law". This is the earliest metal plastic theory in the world. It is more than 800 years earlier than the earliest Trasca criterion in the plastic flow criterion. Therefore, China is also the first country in the world to establish the theory of metal plasticity. In the fourteenth Century, a silver coin was made in Russia.In the sixteenth Century, France and China appeared wire drawing by drawing dies. Cold-drawn steel wires were manufactured and applied in Jiajing period (1522-1566) of Ming Dynasty in China, indicating that cold-working hardening was mastered at that time. 

Q: this product is smooth and large, requiring no pitting and scratching on the surface. Is that possible?

A:This is a little difficult, because the products of the alloy will have this kind of unavoidable phenomenon. It needs a standard sample to make the goods. With our experience, we suggest that you can spray sand on the surface of your company. The products we've done before are all sandblasting. I can send you a sample to show you the effect. It is very good.

Q: can you provide samples before shipment?

A: Yes, we usually arrange the proofing after the mold is opened. After confirming the sample, we arrange to make the bulk goods. We can also provide the sample confirmation before the bulk goods are finished.

Q: how long have you been in this industry?

A: for more than 20 years, the field is absolutely professional.

Q:how long is the cycle of your big goods?

A:We have to see the quantity of the big goods, the difficulty of the product.

Q:What kind of machine is your die casting machine and punch press?

A:Our die-casting is divided into zinc die-casting and aluminum die-casting, zinc die-casting is a vertical heat chamber die-casting machine, aluminum die casting is a horizontal cold chamber die-casting machine, the punch press has friction punch, foot pedal press, oil press punch.

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