Solder of CO<sub>2</sub> gas protection makes medium application in hydrogenation product (on)

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Normal > summary solder of CO2 gas protection undertakes do not rubiginous the craft experiment of the v of the layer and craft assess, apply in hydrogenation product, obtain favorable result. Normal > keyword: Gas of hydrogenation product CO2 protects solder v Normal >normal > introductive Normal > my factory is town sea successfully after petro-chemical total factory created reactor of 560t hydrogenation cracking, changed total factory of total factory and Guangzhou petrifaction to make reactor of to decoke of hydrogenation of two 440t residuum and hydrogenation of a 220t successfully for Mao Mingshi in succession again purificatory reactor. The total construction of hydrogenation reactor is basic and similar, it is by cylindrical shell, seal what head and size differ to take-over a composition, these cylindrical shell and cylindrical shell, cylindrical shell and head, cylindrical shell and take-over between the joint wall after soldering all needs v anticorrosive stainless steel still has the take-overing with large minor volume wall, take-over end panel and flange sealing surface also need v stainless steel, and the protruding stage appearance of cylindrical shell wall also needs to undertake stainless steel v. Some are usable 30 (37.

5) the tape of Mm extremely, but as a result of equipment, stage the element that waits for a lot of respect and cannot use belt pole v, be forced to use manual arc welding to undertake v so, total v area amounts to left and right sides of 20 ~ 30m2, use stainless steel welding rod about 4 ~ 6t, of workload can be imagined greatly. Normal > is manual arc welding is in whole solder the proportion with the very large light in the domain, it is having the advantage with handy and agile operation, but because welding rod is shorter, need to often change when solder. With circuit of filling v of wall of 560t hydrogenation cylindrical shell () solder path is exemple, v of manual arc welding needs to change welding rod 50 times or so. Additionally stainless steel welding rod solders below largish electric current, welding rod is met aglow, fused and undesirable, for this sometimes head of longer aglow welding rod is forced to abandon need not, cause welding rod loss bigger, labor strength of the solderer is greater also at the same time, and closely related the operates skill, solderer physical power of its quality and solderer and mood. These respects have wave motion to solder with respect to meeting influence a bit the stability of quality. Normal > improves the ceaseless development with science and technology what make ceaselessly as production, to strengthen manufacturing plan, stabilize v quality, reduce labor intensity of the solderer, managing solder material, while my factory is using manual arc welding to undertake v, used the medical core welding wire that regards protection as gas with CO2 gas in time automatic v. Normal >CO2 gas protection has solder the method is orderly, can apply solder continuously the characteristic of a few hours. Be in place of cylindrical shell butt joint, wall v needs to change with welding electrode filling caboodle welding rod is controlled 50 times, contact is very much, and solder of CO2 gas protection has a contact only, reduced the connect in solder path greatly, decreased to change the time of welding rod, additional, the solder of solder of CO2 gas protection left and right sides of every ply Value="4" UnitName="mm">4mm, and ply of v of manual electric arc has Value="2" UnitName="mm">2mm left and right sides only, can improve work efficiency double much, in addition what solder of CO2 gas protection uses is medical core welding wire, solder path coating is very thin, extremely easy purify, appear not easily slag inclusion phenomenon. Afore-mentioned a variety of solder of protection of gas of characteristic specification CO2 compares manual arc welding to be able to be more in the production of hydrogenation product the effect with very big play. Normal >1 solders craft assess Normal >1.

1 my factory asks according to actual product structure and v, use respectively try board and tried annulus to do assess of two kinds of craft. Assess uses Normal > and product.

25Cr, Mo forging, its chemistry composition and mechanical function see a table respectively 1 with the watch 2. Normal Align=center> expresses 1 2.

25Cr, Normal Align=center>normal MARGIN of Center" Align=center> chemical composition: 0cm 0cm 0pt; LINE-HEIGHT: 12pt; TEXT-ALIGN: Center" Align=center>Cnormal Align=center>Sinormal Align=center>Mnnormal Align=center>Pnormal Align=center>Snormal Align=center>Crnormal Align=center>Monormal Align=center>Sbnormal Align=center> standard is worth Normal Align=center>0.

13 ~ 0.

17normal Align=center> ≤ 0.

10normal Align=center>0.

30normal Align=center>0.

60normal Align=center> ≤ 0.

010normal Align=center> ≤ 0.

012normal Align=center>2.

0 ~ 2.

5normal Align=center>0.

90 ~ 1.

10normal Align=center> ≤ 0.

003normal Align=center> tries board Normal Align=center>0.

15normal Align=center>0.

07normal Align=center>0.

535normal Align=center>0.

09normal Align=center>0.

001normal Align=center>2.

38normal Align=center>1.

08normal Align=center> < 0.

003normal Align=center> tries annulus Normal Align=center>0.

15normal Align=center>0.

07normal Align=center>0.

535normal Align=center>0.

09normal Align=center>0.

001normal Align=center>2.

40normal Align=center>1.

08normal Align=center> < 0.

003 Normal MARGIN of Center" Align=center> chemical composition: 0cm 0cm 0pt; LINE-HEIGHT: 12pt; TEXT-ALIGN: Center" Align=center>Snnormal Align=center>Asnormal Align=center>Ninormal Align=center>Cunormal Align=center>[H]normal Align=center>Jnormal Align=center>Xnormal Align=center> standard is worth Normal Align=center> ≤ 0.

015normal Align=center> ≤ 0.

016normal Align=center> ≤ 0.

18normal Align=center> ≤ 0.

16normal Align=center> < 10-6normal MARGIN of Center" Align=center> ≤ : 0cm 0cm 0pt; LINE-HEIGHT: 12pt; TEXT-ALIGN: 20normal Align=center> ≤ : 0cm 0cm 0pt; LINE-HEIGHT: 12pt; TEXT-ALIGN: Center" Align=center> tries board Normal Align=center>0.

007normal Align=center> < 0.

005normal Align=center>0.

05normal Align=center>0.

04normal Align=center> < 10-6normal Align=center>96.

8normal Align=center> < 13.

8normal Align=center> tries annulus Normal Align=center>0.

007normal Align=center> < 0.

005normal Align=center>0.

05normal Align=center>0.

04normal Align=center> < 10-6normal Align=center>95.

2normal Align=center> < 14.

4 Normal >normal Align=center> expresses 2 2.

25Cr, Mo forging is mechanical function Normal Align=center>normal Align=center>normal MARGIN of Center" Align=center> normal temperature: 0cm 0cm 0pt; TEXT-ALIGN: Normal >427 of ℃ of Center" Align=center>value="427" UnitName=" : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center> pounds tenacity / J.

Cm-2normal MARGIN of ℃ of ">10 of ℃ of Center" Align=center>value="10" UnitName=" : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center> pounds tenacity / J.

Cm-2normal MARGIN of ℃ of ">-30 of ℃ of Center" Align=center>value="30" UnitName=" : 0cm 0cm 0pt; TEXT-ALIGN: Normal Align=center> hardness: 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center>/HBnormal MARGIN of Center" Align=center> σ : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center> σ 0.

2/MPanormal Align=center> δ 5 (%)normal Align=center> Ψ (%)normal Align=center> σ 0.

2/MPanormal Align=center> δ 5 (%)normal Align=center> Ψ (%)normal Align=center> standard is worth Normal Align=center>520normal MARGIN of Center" Align=center> ~ : 0cm 0cm 0pt; TEXT-ALIGN: 314normal Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: 19normal Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: 40normal Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: 242normal Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: 19normal Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: 40normal Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: 78normal Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center>(average) Normal MARGIN of Center" Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center>(single cost) Normal MARGIN of Center" Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center>(average) Normal MARGIN of Center" Align=center> ≥ : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center>(single cost) Normal MARGIN of Center" Align=center> ≤ : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center> tries board Normal Align=center>556normal Align=center>417normal Align=center>27normal Align=center>83normal Align=center>383normal Align=center>22normal Align=center>82normal MARGIN of Center" Align=center> > : 0cm 0cm 0pt; TEXT-ALIGN: 368normal Align=center> > : 0cm 0cm 0pt; TEXT-ALIGN: 368normal Align=center> > : 0cm 0cm 0pt; TEXT-ALIGN: 368normal Align=center> > : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center>176.

183normal Align=center> tries annulus Normal Align=center>537normal Align=center>393normal Align=center>30normal Align=center>82normal Align=center>309normal Align=center>24normal Align=center>82normal MARGIN of Center" Align=center> > : 0cm 0cm 0pt; TEXT-ALIGN: 368normal Align=center> > : 0cm 0cm 0pt; TEXT-ALIGN: 368normal Align=center> > : 0cm 0cm 0pt; TEXT-ALIGN: 368normal Align=center> > : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center>181.

187 Normal > exceeds material of v of low carbon stainless steel restrict steel place import from Kobe, transfer GFWvalue="309" UnitName="l">309L of brand of welding wire of layer medicine core, do not become rusty GFWvalue="347" UnitName="l">347L of brand of welding wire of layer medicine core, welding wire ф Value="1.

6" UnitName="mm">1.

Composition of 6mm its chemistry sees a table 3. Normal Align=center> expresses composition of chemistry of welding wire of 3 medicine core (% ) Normal Align=center>normal MARGIN of Center" Align=center> chemical composition: 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center>Cnormal Align=center>Sinormal Align=center>Mnnormal Align=center>Pnormal Align=center>Snormal Align=center>Ninormal Align=center>Crnormal Align=center>Monormal Align=center>Cunormal Align=center>Sbnormal Align=center>Gfwvalue="309" UnitName="l">309lnormal Align=center>0.

026normal Align=center>0.

46normal Align=center>1.

30normal Align=center>0.

025normal Align=center>0.

003normal Align=center>12.

98normal Align=center>23.

58normal Align=center>0.

02normal Align=center>0.

02normal Align=center>normal Align=center>Gfwvalue="347" UnitName="l">347lnormal Align=center>0.

03normal Align=center>0.

44normal Align=center>1.

41normal Align=center>0.

022normal Align=center>0.

002normal Align=center>10.

10normal Align=center>18.

91normal Align=center>normal Align=center>normal Align=center>0.

50 Normal >normal >1.

2 v assess is brief craft Normal > is filtering try before layer v board (try annulus) warm-up (100 ~ 120) ℃ transfers after the layer piles, undertake instantly (350 ~ 400) of ℃ × 2h go hydrogen treatment, cross the surface to have 100% chromatic examinations to passing, qualification hind is again successive v does not become rusty 2 layers layer, overall height of its v layer spends ≥ Value="8" UnitName="mm">8mm, main v parameter sees a table 4. V tries board classics (690 ± 10) undertake after final heat treatment of ℃ × 26h 100% chromatic with ultrasonic flaw detection. Normal >1.

Normal > asks according to product technology and relevant code tries to assess board (try annulus) refer analyse sampling. Normal Align=center>normal Align=center>normal Align=center> expresses welding wire of 4 medicine core Normal Align=center>normal MARGIN of number of plies of Center" Align=center> v: 0cm 0cm 0pt; TEXT-ALIGN: Ply of layer of Center" Align=center> v / Mmnormal Align=center> solder / J.

Mm-1normal Align=center> warm-up / ℃ Normal Align=center> gas.

Min-1normal Align=center> layer / ℃ Normal MARGIN of Center" Align=center> excessive layer: 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center>2.

5 ~ 3normal Align=center>1120normal MARGIN of Center" Align=center>100 ~ : 0cm 0cm 0pt; TEXT-ALIGN: 20normal Align=center>12 ~ : 0cm 0cm 0pt; TEXT-ALIGN: 150normal Align=center> ≤ : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center> does not become rusty layer (one) Normal Align=center>3 ~ 3.

5normal Align=center>1182normal Align=center>normal MARGIN of Center" Align=center>12 ~ : 0cm 0cm 0pt; TEXT-ALIGN: 150normal Align=center> ≤ : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center> does not become rusty layer (2) Normal Align=center>3 ~ 3.

5normal Align=center>1182normal Align=center>normal MARGIN of Center" Align=center>12 ~ : 0cm 0cm 0pt; TEXT-ALIGN: Center" Align=center> ≤ 150 CNC Milling CNC Machining