少妇特殊按摩高潮惨叫无码,日韩欧美精品一区二区在线,精品国产Av无码久久久e,天天综合狠狠精品视频一二三区

Titanium rods

The α alloy contains a certain amount of elements that stabilize the α phase, and it is mainly composed of the α phase in the equilibrium state. Alpha alloy has a small specific gravity, good thermal strength, good weldability and excellent corrosion resistance. The disadvantage is that it has low room temperature strength and is usually used as a heat-resistant material and a corrosion-resistant material. Alpha alloys can generally be divided into full alpha alloys (TA7), near alpha alloys (Ti-8Al-1Mo-1V) and alpha alloys with a small amount of compounds (Ti-2.5Cu).

Chinese name Titanium rod

National standard number: TA1, TA2, TA3, TA7, etc.

American label number: GR1, GR2, GR3, etc.

Size (mm 6.35 to 7.94 etc.

National standard number: TA1, TA2, TA3, TA7, TA9, TA10, TC4, TC4ELI, TC6, TC9, TC10, TC11

American label number: GR1, GR2, GR3, GR5, GR7, GR12

Titanium rod production specifications

Alloy introduction

Titanium alloys can be divided into three categories according to the composition of the phases: α alloys, (α+β) alloys and β alloys. China is represented by TA, TC, and TB respectively.

① The α alloy contains a certain amount of elements that stabilize the α phase, and it is mainly composed of the α phase in the equilibrium state. Alpha alloy has a small specific gravity, good thermal strength, good weldability and excellent corrosion resistance. The disadvantage is that it has low room temperature strength and is usually used as a heat-resistant material and a corrosion-resistant material. Alpha alloys can generally be divided into full alpha alloys (TA7), near alpha alloys (Ti-8Al-1Mo-1V) and alpha alloys with a small amount of compounds (Ti-2.5Cu). ② The (α+β) alloy contains a certain amount of stable α-phase and β-phase elements, and the structure of the alloy in the equilibrium state is α-phase and β-phase. (α+β) alloy has medium strength and can be strengthened by heat treatment, but its welding performance is poor. (α+β) alloys are widely used, and the output of Ti-6Al-4V alloy accounts for more than half of all titanium materials.

Titanium rods (3 sheets)

③ The β alloy contains a lot of elements that stabilize the β phase, which can keep all the high temperature β phases to room temperature. Beta alloys can generally be divided into heat-treatable beta alloys (meta-stable beta alloys and near-meta-stable beta alloys) and thermally stable beta alloys. Heat-treatable β alloy has excellent plasticity in the quenched state, and the tensile strength can reach 130~140kgf/mm2 through aging treatment. Beta alloys are usually used as high-strength and high-toughness materials. The disadvantages are high specific gravity, high cost, poor welding performance, and difficult cutting processing.

illustrate

Titanium rod production status:

Hot processing state (R)

Cold working state (Y)

Annealing state (M)

Solid solution state (ST)

Titanium rod manufacturing process:

Hot forging-hot rolling-turning (polishing)

Titanium rod implementation standard

National standard: GB/T2965-2007, GB/T13810, Q/BS5331-91

American Standard: ASTM B348, ASTM F136, ASTM F67, AMS4928

1. Reference standards

1: GB 228 Metal Tensile Test Method

2: GB/T 3620.1 Titanium and titanium alloy grades and chemical composition

3: GB/T3620.2 titanium and titanium alloy processed products chemical composition and allowable deviation of composition

4: GB 4698 sponge titanium, titanium and titanium alloy chemical analysis method

2. Technical requirements

1: The chemical composition of titanium and titanium alloy bars should meet the requirements of GB/T 3620.1. When repeated inspections are required, the allowable deviation of the chemical composition should meet the requirements of GB/T 3620.2.

2: The diameter or side length of the hot processed bar and its allowable deviation should meet the requirements of Table 1.

3: After hot processing, after turning (polishing) the bar and cold rolling, the allowable deviation of the diameter of the cold drawn bar shall meet the requirements of Table 2.

4: The out-of-roundness of the turned (polished) bar after hot processing should not be more than half of its dimensional tolerance.

5: The indefinite length of the processed bar is 300-6000mm, and the indefinite length of the annealed bar is 300-2000mm, and the fixed or multiple length should be within the range of indefinite length. The allowable deviation of the fixed length is +20mm ; The length of the double ruler shall also be included in the cut amount of the bar, and the amount of each cut is 5mm. The fixed length or the length of the double rule shall be indicated in the contract.

Medical titanium rod

Specification: rolling ￠8.0---40mm×L; forging ￠40---150mm×L

Metallographic structure: The grain size of pure titanium is not less than grade 5, and the TC4 titanium alloy conforms to A1-A9.

Surface: black leather surface, car polished surface, polished surface (H11, H9, H8)

Medical titanium rod performance (refer to executive standard: GB/T13810-2007, ASTM F67/F136).

The mechanical properties of the above medical titanium rods are in accordance with the national standard GB/T13810-2007; if you need to see the medical titanium rod products of the American standard ASTM F67/F136, please see the pure titanium rod ASTM F67, titanium alloy rod ASTM F136