Special Design for Ss 304 - Laser Tailor-Welded Boiler Plate – JINBAICHENG

Product Introduction

Transportation: Support sea transportation
Standards: AiSi, ASTM, JIS
Grade: Ar360 400 450 NM400 450 500
Place of Origin: Shandong, China
Model: Ar360 400 450 NM400 450 500
Type: steel plate, steel plate
Process: Hot rolled
Surface treatment: coating
Application: boiler plate
Width: 2000mm or as required
Length: 5800mm 6000mm 8000mm
Tolerance: ±5%

Processing services: bending, welding, uncoiling, cutting, punching
Product name: Wear-resistant steel plate
Material: NM450 500 550 640 NM4400 450 500
Thickness: 3mm-100mm or as required
Packaging: Standard airworthy packaging
Uses: Industrial
Shape: rectangle
Supply Ability: 2000 tons/ton per month
Packing details: advanced airworthy packing, also according to customer requirements.
Port: Qingdao, Tianjin, Shanghai

Product Display

Smelting and refining process

The development of 20g in Jinan Iron and Steel Group Corporation (abbreviated as Jigang) was carried out more than ten years ago, but limited to the level of process equipment and equipment at that time, the performance of steel plate was unstable, and there were often problems of inconsistent cold bending and aging properties. The following measures shall be taken to improve cold bending and aging properties and ensure low-temperature impact toughness:

(1) Adjust the internal control components and increase the lower limit of manganese content to 0.65%.

(2) The refining operation of “Trinity” of wire feeding, temperature regulation and argon blowing is adopted.

(3) Strictly control the pouring temperature.

(4) The content of microalloyed element Ti increased from 0.003% to more than 0.008%. (5) The whole process protective pouring process is adopted to reduce the absorption of n

Production Process

Production process route: 20g (Ti) boiler plate is a kind of steel with high requirements for comprehensive mechanical properties, relatively pure steel, and the composition of melting components and microalloying elements that are more sensitive to the effects of various properties. Therefore, the key to the 20g (Ti) production process is to optimize the melting composition, reduce the total amount of inclusions in the steel, select appropriate microalloying elements, use controlled rolling, improve the quality of the plate, and stabilize the application of aging impact. The technical route of 20g is: high-quality molten iron → purification treatment → smelting of composition optimization and steel purification → microalloying and refining of molten steel → protective casting → high-quality slab → controlled heating → temperature-controlled rolling → plate shape and thickness control →Control cooling→product.

Purpose deep processing technology

Laser tailor-welded blank and continuous variable cross-section board technology

1. Tailor Welded Blanks (Tailor Welded Blanks, TWB) uses laser as the welding heat source to combine and weld several different materials, different thicknesses, and different coatings of steel, stainless steel, aluminum alloy, etc. into a whole plate.

2. Using laser tailored welding technology, it is possible to reasonably combine materials of different thickness sizes and strength levels according to the stress conditions of the structural parts, improve the structural rigidity while reducing the weight of the parts, and also increase the utilization rate of materials and reduce the number of parts. The number of parts in the simplifies the process. Laser tailored welding technology has become the main technical means of automobile lightweight, and it has been applied to the models of many manufacturers. Mainly used in front and rear door inner panels, front and rear longitudinal beams, side panels, floor panels, A, B, and C pillars on the inside of the door, wheel covers and trunk inner panels, etc.

3. Tailor Rolling Blanks (TRB), also called differential thickness plates, refers to the real-time change of the roll gap size through the computer during the rolling process of the steel plate, so that the rolled thin plate has a pre-determined direction along the rolling direction. Custom variable cross-sectional shape.

4. Continuous variable cross-section panel technology has been widely used in the manufacture of body structure parts, such as engine cover, B-pillar, body chassis, motor spacer guide, middle column inner panel, mudguard and crash box, etc., and has been successfully applied to Audi, BMW, Volkswagen, GM and other models.

5. Laser tailored welding and continuous variable cross-section technology change the thickness of the stamping material through different technological means, and are used to solve the problem of different load-bearing capacity requirements for different parts of auto parts under load. Compared with the two, the advantage of tailor-made laser welding technology lies in its flexibility, which can realize the splicing of any position and the splicing of different materials. The advantage of continuous variable cross-section technology is that there is no welding seam, the hardness change along the length direction is relatively gentle, it has better formability, and the surface quality is good, the production efficiency is high, and the cost is low. Luggage, medical equipment, motorcycle shell; automobile, bus inner roof, dashboard; seat backing, door panel, window frame, etc.

Mechanical behavior